Preview:

Special thanks to Bi-Extacy to Project-GimpBC for allowing them to convert and this set of brushes he created! Please stop by his site and tell him thanks! He deserves the credit, not me. Please make sure you use these brushes in accordance with the terms and conditions listed on his site.

Bi-Extacy
The original set of PS brushes can be found here:
http://bi-extacy.deviantart.com/

Enjoy!