In the Handweaver's Guild of Boulder, there is a Complex Weavers interest group. I decided to join when it started up even though I was a pretty new weaver. Nothing wrong with having the most to learn, especially when many of the others have been weaving for decades.
These ladies are amazing! They know their way around rules I haven't even learned yet.
Anyway, we've been working our way through Bonnie Inouye's book Exploring Multishaft Design this year. The first 6 chapters deal with what you can do design wise on a straight threading. So I put on a long warp and made mugrugs for chapter 1, twills. Some of the liftplans I made looked pretty good, so I wound a 7 yard warp pf 6/2 cotton and wove some towels. The fringe turned out to be a bad idea with that particular yarn, but overall I'm quite pleased. I got to play with pattern, and color too. I'm still figuring out how color works in weaving, mostly by imitation and my own trial and error.