What lens are you using?
To me the focus seems a little soft. By my eyes, the focal point seems to be a small spot to the left of the bridge of the nose. The eyes seem slightly out of focus, but I do like your ceiling lamp in the eyes
If you reshoot it, I would probably focus on the eyes, and stop down your shutter a little more.
The lens is the one that came with the camera, Canon Rebel Xsi. This pic was done the first week I had the camera and was just messing around with it. Not sure I can get the chance to reshoot since my cat doesn't like listening to me. I'll keep the comments in mind though.