I like this a lot. Voters will probably comment that the hand itself should have been sharper, but there was motion going on, so I get it. I like the lighting on the hand very much. And the B&W was the way to go. Very nice...10! (And the model being cute doesn't hurt either - LOL)
Nice idea, pose, composition, exposure. More DOF to include right hand would be better. Nice duotone choice, but feels too midtone gray, consider brightening the levels to compensate.