Yesterday I failed in my first attempt to show how to fold a scorpion that was designed by Robert J. Lang. It took way too long, about 2.5 hours, so I took that video and just sped up by factor 16. You can check it out. Today I tried again, and it took me a good hour to explain the model through. See Part 1, Part 2, Part 3, Part 4, Part 5, and Part 6.
A much easier model is a pelican designed by John Montroll, which I also did a video to.