author, a little burning/shading around the floating "Mask" might give it a little more density to give it more of a solid rather than a flat feel.
Also, if you go to this link
http://www.brusheezy.com/brushes/1830-real-smoke-photoshop-brushes
These are photograph produced brushes that are allowed in competition and you might find a "better" source smoke from here. The current smoke you are using is fine, but you might be able to find a more dramatic look as the smoke you are using in this chop looks a tad bit distorted. Only my opinion of course. Good luck