For such a great model, and the normal level of your work, I'd want a more interesting background. It's kind of like you just said, "hey, kneel down over here" and that was it. Sorry, but that's how I view this shot -- especially how good your work normally is!
Totally agree -- Your work is fantastic and as you were looking for input... Of course, in the words of Dennis Miller, I could be wrong. In fact, I am looking at your most recen posting (model on bed in green) and I am loving the lighting! Nice!