Interesting use of fireworks and some kind of model/figurine. I think the nightmare aspect might have been pulled off a little bit better if the weapon had been silhouetted just a bit more --a s it is you can see he's holding something, but whatever it is is a bit indistinct. I'm not sure if it would work, but did you try a vertical composition? Or maybe including the figure at a sharp angle?
The red lighting behind is very nice. Unfortunately, I'm unaware of anything shaped like the humanoid in the foreground, so the photo does not strike em as especially evocative.