First is pretty cool, try to center all of the more detailed effects towards the stock for the most part i think. Maybe more fractal.
Lawl, I usually make one just to throw up there , for the lawlz. I was trying to go with some fractals, see how they look and how I can work with them.
i like the second one, try it black / white. i recon that would be awesome. overall nice piece here man. =D