New to 2D Character Animation? Here Are The Most Common Mistakes And How To Avoid Them

Elevate your 2D animations from beginner to pro by avoiding these common mistakes.

By School of Motion 7 min read

So you've opened After Effects, created the cool animation you've had in your head all day, and hit play only to watch your character move like a posessed marionette.

Welcome to 2D character animation! The good news? Every animator has been exactly where you are right now. The better news? These mistakes are completely fixable once you know what to look for.

TL;DR

New animators commonly struggle with timing issues, stiff poses, floating characters, and over-reliance on automation. Fix these by studying real movement, embracing the principles of animation, adding weight through proper arcs and spacing, and remembering that great animation comes from thoughtful keyframing and not just fancy rigs.

Mistake #1: Ignoring the Principles of Animation

Here's the thing about the 12 principles of animation, they're not suggestions. They're the foundation of believable movement, whether you're working in 2D, 3D, or stop-motion.

New animators often jump straight into After Effects without understanding squash and stretch, anticipation, or follow-through. The result? Characters that move, technically speaking, but feel lifeless and robotic. Your character might walk from point A to point B, but without proper anticipation before each step or follow-through on the arms, it looks like they're gliding on ice skates.

How to avoid it: Start with pencil tests or simple shape animations before tackling full character work. Animate a bouncing ball until you can nail the timing, spacing, and squash in your sleep. These fundamentals translate directly to character animation; a character jumping is really just a sophisticated bouncing ball with limbs attached.

If you want a structured deep-dive into applying these principles specifically to character work, Character Animation Bootcamp breaks down exactly how to use each principle in After Effects.

Mistake #2: Creating Stiff, Symmetrical Poses

Nothing screams "beginner" louder than a character standing with both arms at exactly the same angle, both legs perfectly parallel, and their head dead-center. Real bodies don't work that way. We shift our weight, we favor one side, we gesture asymmetrically.

When you create mirror-image poses, your character looks like a paper doll, not a living thing. This extends to movement too. If both arms swing forward simultaneously during a walk cycle, or if the character's head stays perfectly level while walking, you've created an uncanny valley situation that viewers will instinctively reject.

How to avoid it: Embrace asymmetry and contrapposto. When one leg is forward, the opposite arm should be forward. When the character leans left, the right shoulder typically drops. Study how real people stand at bus stops or in coffee shop lines, nobody maintains perfect symmetry. Push your poses further than feels comfortable at first, you can always dial it back if necessary. What looks "too much" in your viewport often reads as "just right" in the final render.

Mistake #3: Letting Characters Float Instead of Move

Your character just walked across the screen, but somehow it feels... wrong. They're probably floating. This is one of the most common mistakes in 2D character animation for beginners, and it happens when you forget that movement has weight and consequence.

Floating occurs when there's no proper connection between the character and their environment. Their feet might slide across the ground instead of planting firmly. Their body might stay at a constant height while walking instead of bobbing up and down. There's no sense of gravity pulling them down or effort pushing them up.

How to avoid it: Master the concept of weight transfer. When a character walks, their body rises when both feet are apart (the passing position) and falls when a foot plants (the contact position). Add a slight bounce or settle when they land from a jump. Most importantly, make sure feet, hands, and bodies actually connect with surfaces rather than hover near them.

Mistake #4: Over-Relying on Auto-Keyframe and Linear Interpolation

After Effects wants to help you, which is why it offers auto-keyframe and defaults to linear interpolation. But these "helpful" features are actually sabotaging your animation. Auto-keyframe creates keyframes whether you need them or not, cluttering your timeline and making timing adjustments a nightmare. Linear interpolation makes everything move at constant speed which nothing in real life ever does.

When you let After Effects control your keyframes this way, you get movements that feel mechanical and lifeless. A character's arm doesn't accelerate smoothly into a gesture, it just moves at constant velocity then stops dead. There's no easing, no personality, no life.

How to avoid it: Turn off auto-keyframe immediately (seriously, right now). Set keyframes intentionally, only where you need them. Then open your graph editor and befriend it. Learn to read and adjust those bezier curves. Easy-ease (F9) is your starting point, but you'll need to customize those curves for each situation. Fast-in, slow-out creates very different energy than slow-in, fast-out. Understanding this distinction is what separates okay animation from great animation.

Mistake #5: Animating Everything All At Once

You've created your character, and now you're trying to animate the walk cycle while also animating the arm gestures, head turns, blinks, and that little antenna bounce all at the same time. Your timeline looks like a Jackson Pollock painting, and you can't figure out why nothing feels right.

This approach overloads your brain and makes timing adjustments nearly impossible. When everything moves simultaneously in your timeline, you can't isolate what's working and what isn't. You're essentially trying to conduct an orchestra while also playing every instrument.

How to avoid it: Animate in layers. Start with your primary action, which is usually the body or hips for a walk cycle. Get that timing perfect before moving on. Then add the legs. Once those feel good, add the arms. Head and facial animation come last. This approach is called "layering," and it's how professional animators work. It allows you to adjust timing on each element independently and ensures each layer of animation supports the others rather than fighting for attention.

Mistake #6: Neglecting Secondary Motion and Follow-Through

Your character's body stops moving, but their hair, clothing, or accessories should keep going for a few frames. This is follow-through, and when it's missing, your character looks like they're made of solid plastic.

New animators often rig everything to move together as one unit. The character's ponytail is parented directly to the head with no independent movement. A loose sleeve is just part of the arm. This makes logical sense from a rigging perspective, but it kills the illusion of life.

How to avoid it: Identify what should have secondary motion: hair, clothing, floppy ears, tails, jewelry, anything that isn't rigid. These elements should lag behind the primary motion and overshoot when the main body stops. Use separate null objects to control these elements, and offset their keyframes by a few frames from the primary action. Add an extra bounce or two after the main action stops. It seems like a small detail, but this kind of secondary motion is what makes viewers believe your character exists in a physical world.

Mistake #7: Using Bad Reference or No Reference At All

"I don't need reference, I know how people walk!" No, you don't. None of us do. Our brains simplify movement into symbols rather than recording the actual mechanics. When you animate from memory alone, you're animating the symbol of a walk cycle, not an actual walk.

Even experienced animators use references constantly. The difference between a beginner and a pro isn't whether they use reference, it's how they use it and how much they need. Skipping reference means you're probably getting the timing wrong, missing crucial weight shifts, and inventing poses that don't actually occur in real movement.

How to avoid it: Film yourself or someone else performing the action you're trying to animate. Use a phone tripod and shoot from multiple angles. Watch it frame-by-frame. You'll be surprised by what you discover: that weird pose that happens mid-stride, the way the shoulders rotate opposite the hips, how long each foot actually stays on the ground. Don't trace your reference (that often looks rotoscoped and weird), but use it to understand the mechanics and timing. Your animation should be inspired by reality, not enslaved to it.

Key Takeaways

Master the 12 principles of animation before diving into complex character work, especially timing, spacing, and follow-through
Break symmetry in your poses and movements; real bodies are never perfectly balanced
Add weight through proper arcs, spacing, and connection to the environment
Turn off auto-keyframe and learn to love the graph editor
Animate in layers, starting with primary motion before adding details
Give flexible elements their own secondary motion and follow-through
Always use reference footage, even for movements you think you know

Start Strong with Proper Training

2D character animation is challenging, but these mistakes aren't permanent roadblocks, they're just part of the learning process. The difference between struggling for months and progressing quickly often comes down to having proper guidance from the start.

If you want to build your character animation skills on a solid foundation, Character Animation Bootcamp walks you through the entire process from reference and posing to final animation. And if you're still working on creating characters that are actually fun to animate, Character Design Fundamentals teaches you how to design with animation in mind.

Both courses are included in All-Access, along with our entire course library, which is the fastest way to level up your motion design skills!