Not too shabbeh
It was pretty good dude, I did have a few gripes though.
The rhythym guitars sound like they have too much treble. Kind of cuts into the ears abit. Sounds like it would be much more suited to a solo kind of tone.
Drums could do with a bit of work too (but this is coming from the perspective of a drummer...i know what one can, and can't do, when behind a kit ;D).
But besides that, it was a kick ass riff, and the ambience was nice too.
Make a longer version ;D