I'm not exactly a "professional" artist, but I must say that this piece blew me away.
The coloration, the smooth lines, the contrast...all added to the beauty of this photograph.
The dress worn by the model and the lack of shoes give this piece a sophisticated yet care free vibe, which is hardly ever accomplished tactfully. Adding to this is the slight misalignment of the model's dress strap and the wave to her hair. I get the impression that she is waiting for something...ever so patiently.
Anyways, amazing job. I love this through and through and you should be proud of your work!