Drunk-tique #1:

Well, I think that the idea of the piece is certainly solid. I can understand wanting to illustrate something like this. There are a few things that stand out to me about this piece.

The lighting seems to be a little off. In the foreground, you see the shadow as if the light was coming from the left. Your main source of light in this piece though is coming from the center of the piece. I'm not saying that all of the light should have come from the center, but there should at least be another set of shadows dictating light coming from the explosion.

Also, the red glow that you have at the "bottom" of the explosion seems to cover things up that are fairly close to the camera... What that looks like to me is that you tried to show light that was given off from the explosion, but ended up covering some things that would haven't been touched by the light in the process. The tree in the foreground that appears to be directly under the explosion also has the light covering it. In reality, that tree would be covering up the light instead of being covered by it. Right now, the image is flattened by that effect, and if you were to cut out the tree, I think that the illusion of depth would be greatly enhanced.

The shockwave appears to be an image, radially blurred. I think that some more "structure" could have been applied to this effect such as concentric circles implying shockwave "walls".

Other than that, great idea. I think that the execution is slightly off, but regardless, I do understand what you were going for.