Your model has amazing hair and skin. I like the tone of the image, but find too many little things I don't like that detract from those great aspects. I'm not a fan of the eyes turned so far to one side. In this case her left eye looks cranked so far over that we lose half the iris. The tendon in her neck is really distracting also. I know that's really hard to deal with given the body position she is in, but it looks un-natural to me. The crop leaves me feeling like I want to see more of the top of her head to give her more breathing room. Do you have more of this image to rotate the crop CCW just a few degrees? Perhaps that might make the image feel more open.
I like the white BG, but feel perhaps a bit more light on the subject would enhance the image. Just my opinion which is very likely way off. Take it with a large grain of salt.