I've got books and all sorts out to help me get a good feel for the horse tribes, and Mongols, and Japanese, and Chinese, and all sorts of influences that I wanted to get across.
First step is outlining what you want to do with nuln oil or other thin black paint. That way you can sketch with paint rather than lay down thick lines.
The gold is a very simple process. Do a line of brown, then a line of yellow over it where there is a bulge in the cloth, and finally a smaller line of a mix of yellow and white. And a final point of white.