It's nice but there are two main thinks that bother me:
1.) the shadows on her face and body (especially that one from her nose and then the shadow-situation around her right shoulder)
2.) I don't get anything from her the way she looks "in the sky".
You should have tried a more sensual look directly in the camera or so, this looks a little like "day-dreaming", but not in the best way....
The lighting seem too hard/harsh. The shadow on the right side (our left) of her face looks too sharp.
The message seems a bit confusing. Are these fashion shots? If so...the lighting seems way to dramatic. If these are artistic, form studies etc...then the dramatic lighting is more appropriate...but then the make-up & wardrobe seem out of place.
I too find the lighting a bit too harsh. The reflector actually should have solved that. It would also have added a lot more presence if the model had looked into the camera. And the black part of the dress lacks details. Nag nag nag...
It looks more like a beauty shot then a fashion shot (and I know nada about either). If it was for fashion then I don't like how you chopped the dress right below the bust.
The light has been mentioned and I agree.
The other thing that is bugging me is she looks bored and like "I can't be bothered to express anything" and slouchy as before mentioned. She is just looking in a random direction and but doesn't seem be interested. She's not emitting any emotion that would make her interesting but she is beautiful and has wonderful eyes. I think it might have payed off to do a close up of her face (better light) and then pulled back to get more of her outfit in.
I'm glad she likes them though