Let me just say preface my critique with the statement that I'm not a big studio/model person, i don't have any level of expertise in this area, nor do i have any real interest in getting into this field, however i find this shot striking enough to let you know what i think.

The first thing that strikes me is the overall tone. It's not quite muted, it's not quite subtle, and it feels very much right. The colors play well with each other, even though the overall feel is green it doesn't do anything to take away from the beauty of the model's skin tone.

Next is the contrast. Physically there isn't much definition in the dress, however through the pose and lighting you're able to create definition, this works well with the background texture, instead of creating a sudden break the dress is plain enough to stand out, but has enough definition that it doesn't clash.

Finally the pose and angle are unexpected, and work to your advantage. This same picture would be much less striking if it were level or if the model hadn't broken up her figure as much with her arms and leg.

This work is excellent, clearly professional, and it wouldn't surprise me if i saw this used in an advertisement.