wow man, that is just excellent, you have definitely jumped up a couple of levels with that. Very nice to see.
edit: if i can say one thing it is that i dont quite understand the dark line going down her chest and stomach, the general form is a lot like that usually, but I think the value is just too dark compared to the rest of the skin. a value as dark as that on the skin would mean that there is not much light hitting it at all. it would have to be a much deeper dent then i think you intended it to be to be able to have that kind of value. It looks more like a scar to me, and I dont know if that was your intention or not.
anyway, again, awesome work man, looking forward to seeing it finished.