This is my first TUT, made a bit to big in size so i can explain a bit more better(it's also newb friendly, it's got some shortcut keys to CS3). I used CS3 extended since it's the one i got now(don't know if most of the filters work for the older version). After you understand how the "Tiles" filter work, do your own thing(Add your flave to your SIG). Just don't leave out the "Tiles" filter, latez...
P.S. If yha wanna show of your results, go ahead and put them in here