Your skin work is just plain awesome. It's scarily realistic. The skin tone varies realistically, because you made it look a little LESS perfect...if you catch what I mean. I mean, you even have some veins showing through the skin...nice touch. Also the sweat/water coming off her chest (ugh I sound like a pervert) is pretty sweet looking too. The eyes are also very nice as you can see some ripples in the iris.
I have a couple of issues with it as well, however. First, the ear. Although you try to cover it up, you can still see that it is not quite finished under there and it sort of bothers me a little bit since you worked so hard on this photorealistic face and body. Second, her hair. It's not really the texture that bothers me, it's the shading. It seems like just the outer edges were burned, and in comparison with the body that has shading everywhere accurately. Third, her left (viewer right) shoulder. It sort of cuts off and looks a little less soft than the rest of the piece. It might be the shading/lighting or you might have a few jaggies there. It just looks a little flat.
Besides my little nitpicks, this piece is amazing and absolutely beautiful. So realistic too!