Hey, This is Anime River, I used Roarnations's tut which can be found here:
http://www.gfxvoid.com/forums/showthread.php?t=30094
And here is a few other sigs of mine that I have made in the past.
I'd show more, But they are pretty rubbish.
C'nC is welcome.
EDIT
Oh, And the 2 in my current sig.