I've had a request for my folded rings tutorial, so I've added it to the Free Patterns Page on the blog here. I didn't try to edit or update it, so I hope it's understandable. Those were the first diagrams I ever drew on the computer using Serif Draw. (Which I still use, in a somewhat less primitive fashion.)
This reminds me that I am way behind on creating the new website so I can get all my old free patterns and techniques back up again.