Frottage

Frottage means to "rub" from the French language. This technique is achieved by laying a coat of paint thinned with medium, then laying over the top of the wet paint a piece of crumpled paper that has been uncrumpled. Then lift the paper. This will leave behind a textured pattern from the crumpled paper.

You can use just about anything to get a textured pattern.

For more information about this specific technique check out the recommended art books that have this technique.

Click on the "Art Books" link in the menu.