Here is a complete guide to creating customized repeating patterns in GIMP and then adding and using them from the Patterns library.

How to Add Patterns in GIMP. GIMP comes with patterns to help you stitch together the interesting looking textures that you often see in documents and on the Web. One pattern, for instance, may ...

Here is a tutorial showing you how to draw pixel art or convert an existing image to pixel art using Pixelize filter in GIMP on Windows PC.

Although GIMP does not include a diamond texture option, as of June 2012, experiment with digital patterns, paint brushes and filters to superimpose a sparkling effect.