Another excellent set. I like these better than the first - her art doesn't blend in with the background. The work in post looks terrific, although a little hasty in its application? Maybe it's a bit unfair to examine so closely, but studying from across the room won't teach me much.
A few artifacts in the third image above:
There is a copper noisy streak running up the edge of her left arm and over her left shoulder where the skin treatment isn't being applied. I'm guessing that's more the color of her skin in the unretouched shot?
There are several places that the skin was re-toned consistently, but the noise can still be seen (around her navel, bikini line, swimsuit top). It's not noticeable at all unless you study the image very closely.
There is a jag in the inside of her right forearm that I wonder about. I can't image you had to liquify anything on this stunning model, but that kind of hard digital edge is usually an artifact of liquify.
I gave up trying to figure out if there was something off about the eye job on her left eye. It's probably perfect.
With a nod to JimmyD's blog entry this week, I'm certain the three artifacts I mentioned are simply a matter of more precise application of masks.