Airmail Brushes for Photoshop

I have been wanting to make some ephemera style collages, but I want to use images that represent something from an alternative world. This is my first round of stuff for some envelopes and letters. These are supposed to be postal style stamps. Each stamp has 2 versions. One clean. One worn.

Enjoy, be sure to credit me for the brushes. A link back to here would be appreciated as well.