How to make a good background with brushes?

[Primetime]

I can't seem to make a good background. All the tutorials I have read that say make a grungy background (which I want to make) say download these and make that. Mine never look as good as their backgrounds because I'm very inexperienced. Anyone give me some tips or a tutorial that shows this?

[Gabriel]

[ Complete Abstract Sig Tutorial ]

There you go man. Grandy, Maka, and Josh followed this tutorial (and i think some of them still do).
So just follow that and you should be making some pretty narly graphics.

[Primetime]

Thanks Gabriel.