I got the character to walk across the screen, arms swinging, feet landing. My teacher looked at it and said it moves, but it doesn't breathe. I stared at the loop for an hour and I couldn't figure out what makes a drawing feel like it's actually alive.
More people experience this than they realize.
You can make a character move, but you can't make it feel alive.
If this sounds familiar, the Library can help you find the bigger picture.