SewExtremeSeams

Here's a pattern that is free:

https://oliverands.com/free-patterns/reversible-bucket-hat/

Here is a nicely done tutorial:

http://www.u-createcrafts.com/2010/0...do-4-in-1.html

Here is one for an adult size if you sign up with your email address:

http://www.kitschbitsch.com.au/subscribe/ (This one's pretty nice. I did sign up and instructions look great.)

Hope one of these help.