This looks out of focus and possibly overexposed. You might try not using the flash especially so close to the subject. Did you pre-focus before taking the shot? That might also help...
Sorry, this is the worst of the stop smoking shots I've seen. What is in focus? The flash is too bright also. Try not to use the flash on a shot like this. If your subject is too close when the flash goes off, everything looks white.
I like the composition and colouring. The shadows under fingers are distracting. Biggest problem for me is depth of field: only the palm appears in focus, and everything else including the subject is out of focus. Thematic fit.