They have an easy-to-follow formula and with Sarah's permission, I have filmed all sizes for this that will release in time.
It doesn't take much to count the rounds and be able to colour the hats in maybe your desired colours such as organizations and etc.
Sarah also has extensions to add to these hats. There is a frog, crab and whale. If the whale is making you crabby just frog it! haha
I have not filmed the extensions.