This is a good shot but would have preferred it to be in one of the thirds so that the negative space around the hand would really show. Still a good image :)
Really nice shot.
The negative space really concentrates you on the focus of the hand.
Great idea to desaturate aswell, looks silver and more interesting.
cropping a bit off the right to get the subject more off-center would have helped ... i like it though ...kind of an overdone idea ...but, i love the contrast you've got