Kool, i like the motion and excitement of the moment. Only thing I'd suggest is reducing the sparks, vary how far out they reach, and imply some of them bouncing off objects in the room to add a better sense of dimension and depth. Right now they're a bit too bright, full and uniform.
Besides that, the merging between the model and background is excellent. great stuff
I like this blacksmith background. I would love to have a picture of the fire pit blacksmith background for my never ending project of imposing my father as a blacksmith. Is it possible to get a picture of the background without the models? Like a stock image? By the way awesome picture!