Regarding JRSM's question about simple models for a very big group of first-timers, I consider the traditional cicada an absolutely outstanding model for that type of scenario. You could also look for true Pureland models, although I assume they are all authored, so you'd need the respective permission to use them in a commercial setting.
Hope this helps. Cheers! -- *Gerardo G.* gerardo(a)neorigami.com <http://www.neorigami.com> [image: Image] instagram.com/NeorigamiCom *Knowledge and Curiosity in Origami:* *six private** classe**s online* <https://www.neorigami.com/classes> "(...) It doesn’t happen often, but when it does, it takes your breath away and fills you with the true joy of *origami*. I experienced this in my lessons with Gerardo G. I wouldn’t trade it for anything. Gerardo is (...)" *C. R.* *Read the full review* <https://www.neorigami.com/classes#h.q2mt4npahmc2>
