Here is a collection of some cool gimp brushes for you to play with. Just download them, copy the brushes to your gimp brush folder and start creating cool graphics. These include some bloodstain brushes as well as some metallic band brushes.
For those who are unaware of gimp, GIMP (The GNU Image Manipulation Program) is a free software graphics editor commonly used to process digital photographs and other graphics. I have found it much useful and simpler to use than the Photoshop.
To get latest version of gimp , go here.
You can download the brushes right here,