Some random notes:
mario - really beautiful, and great inks! You will color that, won't you? It's begging for it!
peacekeeper - i don't know where the second pose came from, but she's really sexy!
belial - really great anatomy on that pose (aside from what joesen pointed out about the breasts) but optherwise really solid.
artscreen - too bad you won't take it further, the painting is really quite lovely.
doktor-U - wonderfully simple linework and colors! Great take on the pose!
armando - nice changes on the face and you really build up her muscles well. The butt doesn't sit on the ground so much as float, but then, there's not that much ground.
flash bastard - nice coloring and good job with the perspective. The eyes are a little misaligned, but it's a tough angle!
sorry i don't have time to comment on everyone's, but i have to get back to work! anyhow, here's my second one. I like it a lot better than the first.