Studying Anatomy

[Nakun]

I'm studying anatomy and I wanted to get some criticism for my work, so I thought 'What better place than the drawing board?' ...Anyways, here's some of the stuff I have for now. Comments and critiques are more than welcome.

[booter]

just a tip; try varying the outline a little. Leave is bit lighter on some areas instead of outlining the whole image.

[Carwash]

Rockin, where or what are your using to learn? Do these studies come from a particular tutorial/book or are you at art school or something. I need to learn!
I started using the Drawing the Human Figure from Your Mind videos by Riven Pheonix but quickly found i wan't really learning what i need to know, i'e visualising solid forms. Whatever you're doing seems to be better at getting that! Help!