Screening Your Senses

I didn't get good marks for this image, but I feel I deserved what I got. Taken with a traditional camera and film. If you have input how I could have done better, please, please let me know.

I don't like the background, or wish it was more out of focus. I did like the natural lighting on the subject, though If I staged it I would have introduced a light on the left to highlight the bottle cap. Then maybe throw a sheet over the window to hide the jumbled mess back there while still allowing light in and shadows.