Nice lighting and you're on the right track as far comp goes. The comp here lends itself well to creative text placement. I'd use either a tighter or wider crop. One that would show the whole bottle or one that focuses more on the label. I like the bronze shadow.8
Got a feeling that cutting off part of the product is a pretty big no-no in advertising. Seam at the bottom of your background is trouble. Also not sure about the silver label and the white background. I do like the color behind the bottle, but I think a darker background would have worked better even if it meant losing that color. Good luck.
I like the color reflection on the background. The seam where the background materials meet is distracting (and totally avoidable). Lighting is a little strong and generating some glare. Might have had more impact if the entire bottle was visible. Best of luck to you in the challenge.