That is a great idea ! Maybe a couple of details could make it better, though (I think...).

- Did you intentionally left the original background ? If yes, keep it that way but I wonder if another background wouldn't fit better (maybe a simple black bg, or another picture that would emphasize the steampunk look of the whole thing)...

- I think the hands themselves could use a bit more substance. Maybe a "Bevel and Emboss" layer style if you are using PhotoShop... I think it would really help for the realism.

Anyway, great job. Hope my ideas can help...