Nice job. The things I'm noticing about this image are minor. First thing I noticed was you can see the bend/corner of your background in the top right corner. The second thing I noticed was the shadow of the matchbook. Perhaps adjusting the lighting to another angle would prevent that. And the last thing I noticed was that the (right) end of the cigarette is blurred.
Still pretty new to photography, so take my comments as you wish. :-) Hope they help though.