Here are a few high-Resolution Free GIMP brushes which will speed up your project and make life easier to be working on. Most brushes have been converted from photoshop so dont worry if they say photoshop in the image. Please read the terms before using it.
To install, unzip files into the brushes folder in your GIMP program files (usually C:\Program Files\GIMP-2.0\share\gimp\2.0\brushes in Windows or /home/username/GIMP-2.0/share/gimp/2.0/brushes in Linux) and then restart GIMP.
33. GIMP Scratchies