Yer right the model's body is awesome but there's just some areas of this pic that leave me a little cold.
No seperation between costume and body [a little burning will fix that]
Her earrings look wayyyy out of place [I dunno they just don't look mettalic]
And your wrinkles look more like pen marks [it think it's because you didn't apply the dodge tool nor blended them into the costume itself].
I hate being overly critical but its the only way to learn.