Quote Originally Posted by Shruikan View Post
Hardest part? The part where you actually make a picture. :P
Seriously, I'd say shading. I have a hard time visualising things in 3d, so I can never tell where the light and shadows should go. Even now I just guess at it 90% of the time.
This. In fact, I stopped doing that "faded" style of shading, because it just never looked right.

I'm also horrible at drawing bird talons/feet. When you think about how birds have a nice, fluffy, feathery body, it makes you wonder why they have such strange, reptilian feet. Starmie is also right, hands can be tough at times.