I'm gonna take a wild guess, but I think the follo...

I'm gonna take a wild guess, but I think the following is what you might think detracts from the image:

1. No catchlights in the eyes.
2. Back of the hands showing/chopped off fingers.
3. The way she is posed with her arms against her body seems to make her look a little chubby.
4. The indented part of her tummy between her right elbow and the bottom of the bikini top (under the "V" in Vivid)
5. The other indented part, on her left hip.

But that's really nitpicking. I still suck at photography and I'm nowhere even close to being able to produce images as awesome as what I've seen on your blog.