I like the concept a lot, but I think the composition needs a little tweaking.
Seeing more of the diamond and more of her nails would probably help the picture. Adds more elegance. Brides should be all about elegance.
I don't think you should cut off any portion of her fingers. It's a little distracting.
The watch is distracting... brides don't (or shouldn't) be wearing a Timex.

(I have no idea if it's a Timex or a Movado... I'm just being a twit.) The point is that a watch isn't terribly elegant and brides should be all about elegance. Did I say that already?
BTW, I'm sure there's a LOT to the positioning of the hands here. How open or closed her fingers are... how much you do or do not show the nails, the position of the thumb relative to the fingers, the curviture of the fingers, etc.
I would do a lot of searching on bride/hands and see what you come up with. There is a LOT of expression in hands by themselves and a LOT of painstaking research put into them and what they portray. You should see the madness that TV advertising goes through with hand models. It's wild.
Something to think about.
Good luck.