Closeups of fingers are hard cuz we get to notice things like cuticles and such. I wish this was zoomed back a bit so we could see more of the relation between the big and small hand. 5
The color and depth are nice, as is the idea. Might be nice (although granted, not nearly as natural) with a little cloning to manicure the nails. Your entry has a warm feeling that meets the challenge topic perfectly.