I have been crocheting and selling hats online for almost 2 years now. I struggled to find beanie patterns that fit right after I made them (for example, the newborn size pattern I was using was fitting babies that were 12 months old). After lots of testing and feedback from customers, I finally figured out on my own how to size the beanie.
This is a great base hat to create from. Once you have the the basic beanie done, you can customize it with buttons, flowers, or even turn it into a monster!