Ok! This is awesome! And it made me learn how to do a magic circle! I always had been doing things like a chain, and then I had a crummy looking circle!
Ok, so my tension is a bit firm, but if you use a smaller hook, it makes the cutest toddler/baby hat. When you use a larger hook, you get a slightly bigger hat. Because my tension is FIRM, I used a bigger hook. If I needed a bit more room, I just added 2 more single crochet in the magic circle.
I have made Hello Kitty, a minion, a sad attempt of 'Mater (looks like a beaver), and just a stripey hat. I would not have been able to do this unless I had this pattern! Yay!