This origami I made is called the origami five intersecting tetrahedra. It is made of 30 pieces of paper, each of them at a 1:3 ratio. It took about 3 days to make. The final result is larger than a regulation soccer ball! I did not make a tutorial for this, but here are some links to YouTube videos that will show you how to make this model:
this model is very complex, but don't give up if you can't make it!
Thanks for viewing, and good luck!
I apologize for the low quality of the photos. They were taken with my iPod