Learn how to create more depth by using the comb/rake brush on your paintings!
Here is a PDF with basic information and a pattern.
The Rake/Comb brush can be purchased here http://colorsforearth.com/clone/product/2550-golden-taklon-synthetic-comb-rake/
Here are some other uses of the comb/rake brush.
Below is the video for Ceramics.
Below is the video for fused glass.