Oh thank you. Ok, the one I did at home is just pen and paper, but here is a replica in that I did in paint. Hope it helps!
One sc per square. It makes about a 5 inch square mushroom (depending on thickness of yarn and size of hook.) I used a H hook and just some Red Heart acrylic yarn that I had left over. I imagine any hat pattern will work just fine. I worked the 4 colors while I was doing the mushroom and then dropped them and weaved them in. So I started and finished the hat in only one color.
I was thinking about making some potholders with cotton yarn with this same pattern and just doubling the size. I'll let you know how that works out.