Not bad, pleasant portrait when comes to her facial expression. Very beautiful girl.
But just to my eye; she is too close to the background, there is a shadow, and maybe the light was a bit too close as some parts of the skin are "hot", overexposed. Did you used any type of diffuser ? For such a portrait best is very soft light. Maybe also there should be two lights, one to fill in the shadows created by her chick bones. Maybe that all could be rectified to some extend in PP ?