I like what you did here. Really. I envy the coloring here because I can never do color right. And I love the detail with the arms. Also, on her right breast, is that a slight nipple slip? I see like a random blotch of brown. Heh.
I only have two issues with it. I actually don't like that you have her hair down, I always liked her hair up in the pony tail. And that pose is just... I tried putting myself in that pose, man is it awkward.