wow, whats with all the anger down there?? I quite like the piece, there are a few stray bright pixels that could be a couple shades darker, keep doing what your doing!
also, I believe transparency was part of the weekly challenge? Take it easy....
This looks very sloppy. You have given absolutely no thought to pixel placement. It wouldn't take long to turn this into a good looking piece, if you would actually put in some effort. Also not sure why you included the transparent version, it doesn't add much and blends into the background on my skin.
Reminds me of Mt. Erebus in Antarctica. Nice feel.