Big Flower Diamond

At the end I managed to finish this Tessellation. It's this one: www.flickr.com/photos/24776310@N04/2473302556/ folded from a larger piece of paper. The Pergamyn is 70×70cm and it's a 1:128 Grid. The finished Tessellation is about 45 cm in diameter.

I began to fold this more than a month ago, but meantime, I was sick of it. It's my first really big Tessellation.

The Pattern is easy to fold, if you have only the middle part, but it's a lot harder, if you fold circles of these Flower Diamond. I don't want to do it again...