Crossed Double Crochet Sun Hats - Pattern Modification

Now that the sun is starting to be up longer and hotter every day, I wanted to make some a brimmed hat to keep my eyes shaded. I found this free pattern on The Lavender Chair (or check it out here on Ravelry), a wonderful site with tons of free crochet patterns for kids and adults. The hat is so cute! BUT the adult sized pattern is a bit too big for me so it blows off in the wind. And the child sized pattern is way too small for me.

Here are my pattern notes to size down the adult pattern. You'll still need to visit The Lavender Chair for the actual pattern though!

Fit: head circumference 21" with 1" negative ease so it holds onto your head

Abbreviations:
- st/sts = stitch/stitches
- hdc = half double crochet

Pattern Modifications:

Round 1: Hdc 9 in magic ring

Rounds 2-6 follow pattern instructions (round 6 ends with 54 sts)

Adjust round 7 to end up with 64 sts:
2x (2hdc in next st, 1hdc in next 5 sts)
3x (2hdc in next st, 1hdc in next 4 sts)
2x (2hdc in next st, 1hdc in next 5 sts)
3x (2hdc in next st, 1hdc in next 4 sts)

Follow pattern instructions for the rest of the hat. Here's another pic of the finished product (made in Bernat Handicrafter 100% Cotton).