My first impression is that the background really steals the attention from the subject. Since the background is the only real source of color, and it is very high contrast, it prevents your eye from resting comfortably on the subject. This may have worked better with a solid color background, maybe black. This would force your eye back on to the subject.
The lighting also seems a bit soft. It appears to me that there may be two light sources. One above the subject (the bedside lamp?), and the second across the room from the subject (maybe a window?). Neither light source is very dramatic. A single bright light that would create some interesting reflections on the metal would add some punch to this photo. This would also sharpen the picture more.
One other thing to consider is using the full file size available to you. This picture is only 82k. You are allowed up to 150k. That extra resolution can do nothing but help. It allows for more detail in your picture, and in this case may increase the sharpness some!