It's pretty dark around her neck but I don't really know what else you could do with it there. as is this is pretty awesome m8. maybe a bit more depth?
Agreed with the dark around the neck. Hair on the face seems over-sharpened a tad as well. Text doesn't seem to fit, maybe something a bit more simpler? Arial, Century Gothic or Marlett would look nice, I think. Overall though I like the feel, and some hot smudging there as well. Nice job!
iam not really a fan of the big stock image sigs but this one looks pretty good not showing the top part of her face gives the sig a little mystery and the colors in the second one are good