Hands make a great B/W subject, but the mixed lighting and busy background detract. With a bit of underexposure and careful post-processing you could probably make the lighting work (it's almost there as-is), and a crop would handle the rest. Good eye.
Very appropriate title and subject, but the harsh lighting (blown out highlights) and unrelated distractions on the left detract from this shot. Perhaps a backdrop would be more nuetral. Fill flash might help give a more even lighting.
I think you have a good idea here, but I think the left part of the photo is too busy and distracts from the subject. A tighter cropping would have been better.
Could use some lighting work, the slight hint of light on the hand doesn't work very well. I think in this case, you need all or none. The bright light in the background doesnt help to draw viewers into the main subject.