You have a neat concept here and I am enjoying it although I find your execution a tad weak in the colors and composition department.

First off, good sense of lighting you have here and your effect placement is good, although that area of FX you have there seems very washed out and since it is a main focus, it is not very appealing.

Another thing is the composition you have in this piece. It's getting there but it is a bit too messy, especially the background.

What I would try to do is fix the lighting you have here and add more spice to it, color wise and try to make the overall piece less messy, by doing so you'll help this piece a lot.
Good job, keep it up!