This is the first tessallation I made. Ever. I actually own the book Origami Tessellations: Awe-inspiring Geometric Designs by Eric Gjerde, but I haven’t tried to fold anything from the book yet. The diagram of the tessellation I folded was published in Orison number 2 (2010), the Dutch origami magazine. Doing the prefolds was not difficult, but actually really reading the diagrams to put the thing together was quite hard.