One of the most difficult origami models I have ever made: the fiddler crab by Hans Birkeland – posted here with his permission – is made from one single square paper.
I usually make the origami model before I make a video of it, to avoid hang ups and mistakes, in this case the first one I made came out better, even if I made a couple of mistakes.
The claws were the most difficult part as it was hard to make it out from the diagrams – you’ll notice I didn’t fold them correctly.
An interesting fact I found out about the fiddler crab is that if it looses it’s big claw it will develop the opposite claw.
Paper to use
Preferably a big square paper, the bigger the easier to fold.