pretty girl, awesome body. here are a few suggestions:
1. Light the back evenly. Do some metering to make the back even from side to side. It probably would have looked more awesome if the gradation was equal. I like it when the light comes from below and up, fading to dark above the head, or when the entire background is evenly lit. But a difference from one side to the other is distracting. I am using 2 small umbrellas or 2 softboxes at 45 degrees and 3/4 stop hotter than the main to make my back area even.
2. perhaps you can try to put a little distance between the model and backdrop and move the hair light further back so it is behind her more. Sometimes the hair light from the side isnt as effective as from the rear. I am also opening up the aperture more lately on digital to reduce the depth of field and get the film feel back. I am doing more at f/5.6 than I used to. The 1.5X image size digital chip thing makes it harder to get less DOF.
3. Watch the teeth on a model. If her teeth aren't perfect, I ask them to smile with their eyes and keep the mouth closed more. Just my personal preference.
4. Post process the armpit vaginas out. All girls got em, but if you clean that area up in PS, its looks neater.
On number 1, see if you have another image where she is in the same body position but looking right at camera. I bet this would be a killer.
Nice stuff, sorry if my comments are not well received, but I like your work.