I'm not much into product photography but I have done a bit, I don't see too much wrong with this shot.... focus seems on-target, it's sharp, and the angle is great! I just probably would have used ISO 100 and a tripod if I couldn't bring that shutter speed up a bit. (BTW the D3100 handles that ISO setting with no issue) Maybe a different color cast....? But that could be what you were going for! lol
I like it.
BTW I have used that username in the past for many things! lol My name is Ryan W, Threw me off there!