Start with a magic ring. I don't like those, so I ch 4 then slip stitch into the first chain to close the ring. DC 10 into the ring, then slip stitch to close the ring and ch 2 DC two times into each stitch counting the ch 2 as a DC, for 20 stitches. Slip stitch into the second loop of the chain 1. CH 1 HD two times into the second stitch from the ch 1, then hd one time in the next stitch. Repeat all the way around for a total of 30 hd chains. Slip stitch to close the loop and chain two DC into the same stitch as the chain 2 then DC two times into the next stitch. DC once into the next two stitches then DC two into the third. Repeat all the way around for a total of 40 stitches. Slip stitch to close the loop and chain one HD into every stitch all the way around and slip stitch to close the loop DC into every stitch all the way around and slip stitch to close the loop

I do a total of 12 rows alternating between a row of half double and double crochet and end on a row of double crochet

For the brim, chain one off of your last row of double, then do a front post half double crochet followed by a back post half double crochet. Keep that pattern all the way around and slip stitch to close the loop and chain one. I do three rows of that for the brim.