I've collected instructions for several braiding patterns with up to eight strands, you can download the result at Funda mittere: https://fundamittere.de/literatur/khermadion/index-en.html.
Most of the braids are in the Ashley Book of Knots as well, but I hope it's useful to have a small booklet with just the braids for quick reference. In the future I might add information on which patterns differently colored strands create.