I don't think I can call this a tutorial but anyway I thought I would share with you what I did.
Here is a plain fleece hat, I don't remember where or why we had this hat but it didn't get worn because we all wear homemade and silly/cute hats in this house.
So I flattened it out and laid a pattern out on it. There was enough room for all the pattern pieces plus a scrap of extra.
And then we added some puffy paint to the bottom for some traction.
Ignore the silly cat and airplane... puffy paint isn't easy to draw with ;)