I've seen the results of other techniques. This was discovered quite by accident. The brush that was used, is a worn out brush that has been used to apply shimmer dust to cookies over the past several years. After washing it out, I was drying it by dragging it across a paper towel. I loved the pattern that it made. I diluted a bit of "Americolor" and found that it might possibly create a wonderful wood grain look. My opportunity came when I made these wonderful Harp cookies. I loved the results!