@r1k: I was talking about the shadow at the base of the boob, not under it if that makes any sense.
oh that, ya I made that up. In my experience in life drawing, sometimes theres a slightly lighter shade at the very bottom of the boob because the light is reflecting off the stomach onto it, and therefore there is a slightly darker shadow on top of that. Its the same idea as shading a sphere you add the reflected light on the bottom to make it read as more 3d.
its looking better now. on the face in the ref though, notice shes looking slightly down and to the left, but her eyes are looking at us, but in yours her face is straight forward. I might try an edit of the face tomorrow but I gotta go to a new years party and get drunk right now
also I think the arm on our left looks a little off in the new version. keep it up its looking much better than it was in the first post.