Beautiful image, intimate and full of curves, contrast and texture...the shapes are beautiful and the lighting is beautiful; i like your choice of black and white; I -do- notice a slight halo around the thumb- i'm not sure if its from dodging and burning or due to the background? I waver between a 9 and 10 for this image, for now i'm on 10 :)
The tones are nice as well as the clasp of hands that you have captured. It might have been nice if the hand on the left was slightly tilted so you could see the palm a bit but who knows.