yay halo!!! and i think the tip of the BR seems a little overblurred.. cause it blends with the BG. its too late to change now probly, but next time, blur the BG separately, and do the barrel with a smaller, less opaque brush.
I don't like the spots. Especially the small green one on the BR.. It's really distracting for me lol. Otherwise, nice job. I like the depth.