First off, let me say that your model is a beautiful girl. Next, lets get real about this image and what can make it better. Stacy, is the name i'm assuming is the model, has potential, but if she wants to really be a model, she's gotta cut some weight. Models legs are really tight and their hips have very aggressive angles. This girl is healthy and beautiful in every way a regular girl should be, but not quite where a model (professionally) should be. I love the set she is on, the colors contrast gorgeously on her skin tone and the clothing colors are well suited for the scene. One really big mistake is her leg posture. I know those jean-shorts have got to be restricting, but her left knee is locked and that never looks good for a sexy shot. Likewise, her right leg is at too relaxed of an angle. Try really hiking that leg for a more aggressive angle and attentions will be caught. Also, try to catch her with her mouth fully closed, or with a more provocative expression. This girl's chest is probably the center of focus here, as it very well should be. Her breasts are very nice and still have a great youthful perk to them. As well as they, her collar bone and neck length are great and as a photographer, you caught that aspect very well. I'm also really big on how well you separated the background and foreground without losing either one from another. Everything gels nicely and the areas that don't need strong focus, don't have it. The areas that need more emphasis really have it nicely. All in all, this is a great shot and you should be proud. If you continue to use this model, just a few tweaks on her presentation will really do the trick. I'm glad I could critique this.
I think pro models should look more like her, but what can you do... Critique is right about the legs though, doesn't look very natural. Otherwise I love her pose here, shoulders pulled back yet still her arms look relaxed and cool. Looks more self-confident and not afraid to even emphasize her beautiful breasts. Also nicely showing her hips/waist/back curve.