Btw, does anyone know how you can make a forest brush in Photoshop that doesn't just clutter up the screen?

Take this one for instance:

Name:  trebrush.jpg
Views: 394
Size:  23.3 KB

If I try to use it to make a forest, I end up with this mess:

Name:  kaos.jpg
Views: 439
Size:  32.3 KB

Is there a trick to this I'm not getting, or can it just not be done in Photoshop?