i would say Muscle Tone, but i remember Robbin used to have this Great tutorial about how to get an outline of a horse, from a picture. It would be great if there was a tutorial based on that again

I need help on - Shading Highlighting Hooves Muscle Tone and Coats

I need help on doing shading on Corel Painter, cuz it looks like that majority here use GIMP or something else.

I'm hyper, so I'll spin around in a spinning office chair thing for a while.

I need help with muscle tone and shading

Yup, Gimp closes randomly after about 3 hours....Sucks. I Say All of them!!! its hard work, but you would be helping SO many people!