Origami navel shell by Tomoko Fuse 

Michael Zhu it's not hard but it takes some skill and practice to get to the point of being able to make it.

If you skip the tiny part it is easier but looks a little weird at the end of the spiral

ahaha glad to hear that!

i've never done origami in my life and now i have to make a fibonacci shell in 1 hour before school because it is part of an assignment

You tube 638solange

Great!

What is the most complex model you ever folded?

Pfff, It's difficult to say. And I want to first say I'm doing origami for just 3 months. But my most complex models are the flasher hat and flasher big bang, the origami grizzly bear by quentin trollip, the unicorn and ring tailed lemur by roman diaz and the five intersected tethedra. It's very hard to pick one

Flasher hat! After only 3 months! Oh my gosh it took my 3 years!

But, before, I did 3D origami, it's much easier and dull, but it's origami so maybe that helped