The Give it a Whirl Hat pattern was inspired by the knitted Cute Snail Hat by Omura. Once again, since I am not experienced enough with knitting, I resorted to creating my own crochet version to achieve a similar hat. The Give it a Whirl hat is incredibly easy and works up quickly.
How to make a crochet hat the right size - I have been using this same method lately. Its hard to follow a pattern exactly when you are constantly using different yarn. For an adult female, the hat should fit if you crochet a circle until it measures 5 1/4 FLAT (stop your increases at that point). For a mans hat, stop you increases when your circle measures about 6 1/4 FLAT.