Common mistakes when animating 3D model eyes are over-exaggerated movement, inconsistent focus, and ignoring subtle eyelid/muscle details—all making eyes look unnatural.
Over-exaggeration (e.g., too fast or wide gaze shifts) feels robotic; inconsistent focus (not locking onto targets) breaks immersion; neglecting follow-through (like squinting when looking down) loses realism—these are frequent issues for new animators.
Beginners should study real eye movement (slow-motion videos) to mimic natural pacing and tiny changes—this fixes most common mistakes easily.