Ok, I need help from a more experienced crocheter. When making a hat, and I'm just wondering as I'm going along how do I know when I have increased enough? Is it when the circle covers the whole top of my head, or just the crown or what? I ask because of this:
My first attempt at following a pattern for a hat was for my husband. I wanted to surprise him for Christmas. He opened it, and loved it! However his exact words were...."Man! This is really great work! I love it! This would have been great when I was about 8."

I don't want to make that mistake again! So...please help me.