I like the lighting and the pose. I might have tried framing a little lower so we see more of the torso and the hands are nearer the top of the frame. The line at right (a corner?) is a bit distracting. I like the movement of the cloth trailing from the hands, too.
The lighting needs to be stronger in this. It's very flat, and it's a shame, because I love the model and the pose. There seems to be a bit of red eye as well. Adjusting the levels in photoshop could really make this a killer image.
For me, this might work better had her body been more partially turned to the camera rather than a straight side shot. Also, the line down the right hand side is very distracting, along with the dark spot by her raised arm.
Well, she is certainly a beautiful model, I just think you could have done a little better metering the light. If her face was a little sharper it would help too. The wall is grey, so I think if you used a grey card here and metered off the card, you would have been able to get the wall to whiten up and this adding more contrast in the picture. The thing she's holding above her head is a little unidentifiable, so it might be taking away from the shot. I think if it were just her arms over her head it would be a far better shot. Anyway, nice attempt and try a little better light metering and lighting next time and a little more sharpness and I think you'll nail it. Nice going.