The actual fire looks god, but i don't like the composition of this.
This is what i mean by that:
1 - the huge blank negative spaces don't really work here. I'd recommend that you use a dark shader for taking your stock screenies.
2 - The fire render needs warping to get in perspective with the floor, and needs a little more done to make it look 3 dimensional.
3 - the pose dosen't really work, and with the default shaders, bright red and blue joints look a bit.. sh*te, tbh.