I would have moved the hair back over her front shoulder, she seems like shes hiding behind her hair. I also would have softened her skin on her face, fixed the wrinkles in her forhead and whatnot.
the lighting is a little harsh for a good idea like this. if the entire background were one color (black perhaps), it might make the shadows less noticeable? good concept, though.
A shallower depth of field would have come in well here, also my eye keeps getting pulled up to the top left hand corner where the bit of black veil hangs over her hair.