This is a great subject, but I think it could use a re-shoot.... the windows in the back are really blown out. Normally, some blown out hilights don't bother me much at all but these are pretty distracting, especially because the contrast so much from the portrait.
Think about shooting at another time of day, maybe even at night w/a tripod if you can get some light on the subject.
Good find; I'd seriously think about reshooting. You can try and burn down those hilights, but I think there may not be enough detail there.