I think you're really close to an awesome piece.
The gold explosion effect is really appealing, and the picture choice is great. However, they all need to be touched up a bit. For the left picture, I'd try dropping the light down on it so it doesn't blend into the background. Pump up the lighting a tad on the center pic's chest. For the right picture, I'd switch it up entirely so that it looks similar to the left and center picture in terms of effects. The lack of gold coloring interrupts the flow. Finally, I'd suggest shrinking the logo and place it on the left corner since it'll be similar in coloring throughout.
I know that seems like a lot of complaints haha, but this is a good piece already that I think could just be awesome with some touch ups.
7.5/10!