Cool shot, you don't see smoking roses much.
There is a lot going on here. I realize that your trying to illuminate the smoke, but it really overpowers the rose. As a result, the shadows are kinda harsh. Also, the flame in the right is pretty distracting....maybe not so much if it was in focus and a little smaller. If you cropped off half of the smoke from the top I think it would frame the shot better also.
Scolopendra alternans by Insecto1, on Flickr