You have a very patient model.... :) I like the lines, and the negative space at the top, although the shadows at right and the lower left are deep enough to drain some of the detail.
I commend this shot for : the tones, the tiny visible hairs, the curve, and I commend the model (who must love the photographer a lot) that they stayed still with an ice cube on back to pose for shot. Nice work, both of you : )