I just recently finished "ScropianX0"'s art. About a month or so ago, I asked him if I could redraw it and repost it in the art area of Newgrounds. It looks pretty good to me. Go Check that out, and while you're at it check out his art.

Traditional Media:

Female Anatomy
Male Anatomy
Guns
Miscellaneous objects (Tables, Glasses, Statues)
Hair Styles
Clothing
Poses
Degrees
Facial Expressions
Scenery

Digial Media:

Coloring Hair
Metallic Objects
Coloring without lineart