Composition - I don't really care much for the composition of this photo in terms of the actual subject. It does possess some good qualities, but on the whole it really doesn't do much for me. The parts of this I do find appealing are the lighting and the DOF. If this subject looked more like Molly Simms or Heidi Klumm, I'd be more apt to like it :) The one thing I really don't like about this photo is the way that the arm of the glasses looks like its cutting into the finger. I don't know why I noticed that, but I did and its bugged me since I voted.
Technical - This is really a very well taken photo. The lighting and DOF I mentioned earlier. I think the DOF might be just a touch greater so that the hand is more soft than blurry, but it definitely works this way. The choice of black and white was very sound. The mood of this photo almost requires it.
Overall - This is one of THOSE photos.... Really well taken but not the most interesting subject. It's sometimes difficult to critique these because they aren't bad photos at all. You've done some really outstanding photos and I'm sure you'll do some more. Keep up the good work. There was a time that I'd have been thrilled with this score. I'm sure its a little disappointing for you. Good luck in future challenges and I look forward to seeing more of your outstanding work. - Inspzil