I finally made it!!
I need patterns for my Sims3 and have been trying for some time now to make them, but without success. Then I found this great tutorial by Sinastra, who tipped about a plug-in for Photoshop. That made all the difference in the world! After some fumbling around I finally managed to get started with pattern making. I'm really happy about this! Now I don't have to wait for somebody else to create something I can use, but can make them myself.
If you play Sims3, keep an eye on my downloads, I've already submitted the first ones!