I love the photo. Perfect contrast and model capture. I have to agree with dehk that the manip on the shadows seem somewhat unnatural. Also, the blur you used to soften the shades. I personally like seeing a natural flow of the noises and natural skin pores.
First of all, stunning work. Only critique I have for this piece is the shadows, try using a light shade than that black, hints of details instead of just next to jet black will be great. After all, still love it.