There are many things that make this a great photo but the one thing that impresses me the most is the quality in depth of field, and this being.. I would disagree with the very first comment on bettering the photo with movement further to the right. If you were to do this you would not have much of a choice .. You would most certainly have to sacrifice clarity and your dof would look inferior to what you have right here.. right now. Very nice work!
i think the one thing that could improve this image is the point of view, the positiion of the camera;
the window looks out of place and i think that if the photographer had moved to the right, to a position more in front of the wall/door, it would have been a better looking background.
if you absolutely want to include the window, then you should place the camera to include the whole width of the window and also be careful to level the camera so there is not perspective effect that distorts the window's shape.
Of all the photos you uploaded today I like this one the best. But the truth is alot of your photography looks so un-natural. The last thing people want to see anymore is another model in a bathing suit. I think you should find ways to capture the woman.