My first pattern... Dur's Hat!

OK, so technically it's not the first pattern I've written or come up with, but it's the first one I'm sharing.  I'm looking for feedback from all those in the crocheting world to let me know if it makes any kind of sense.  

The pattern came from duplicating a store-bought hat for a friend.  The original hat was very well-loved and was showing some wear.  She asked me if I could make her a new one.  "Of course!" I said, while thinking, "It can't be that hard. It's just a hat." Well, I was a little wrong.  It took me days to figure out the right gauge and stitches and everything, but I did it!  So here's the pattern...  Please let me know if you have questions about it and feel free to leave comments!

Dur's Hat

Yarn: Caron Simply Soft in black

Hook: J/10 - 6.00 mm

A bit of elastic thread

Rnd 1:CH 4, 16 dc in 1^st ch, join to 1^st dc, ch 2 – 16 dc

Rnd 2: Fpdc ch1 bpdc ch1 around, join to 1^st dc, ch 2 – 8 fpdc, 8 bpdc

Rnd 3: Fpdc ch1 (bpdc ch1 bpdc ch 1) in bpdc around, join, ch 2 – 8 fpdc, 16 bpdc

Rnd 4: Fpdc ch1 (bpdc ch1 bpdc ch 1) in bpdc, bpdc in bpdc ch 1 around, join, ch2 – 8 fpdc, 24 bpdc

Rnd 5: Fpdc ch1 (bpdc ch1 bpdc ch 1) in bpdc bpdc in bpdc ch 1 twice around, join, ch2 – 8 fpdc, 32 bpdc

Rnd 6: Fpdc ch1 (bpdc ch1 bpdc ch 1) in bpdc bpdc in bpdc ch 1 thrice around, join, ch2 – 8 fpdc, 40 bpdc

Rnd 7 – 13: Work fpdc in fpdc and bpdc in bpdc around, join, ch2 (on rnd 13 ch1, not 2)

Rnd 14: (crochet over elastic thread in this round for 64 sc) 2sc in ch1 sp after fpdc, 1 sc in each ch1 sp between bpdc, 2 sc in ch1 sp before fpdc around DO NOT JOIN, sc in next 33 sc, ch1 turn

Brim
Row 2: sc in next 25 sc, ch1 turn – 25 sc

Row 3: sc2tog in 1^st 2 sc, sc across, sc2tog in last 2 sc, ch 1 turn – 23 sc

Row 4: sc2tog in 1^st 2 sc, sc across, sc2tog in last 2 sc, ch 1 turn – 21 sc

Row 5: sc2tog in 1^st 2 sc, sc across, sc2tog in last 2 sc, ch 1 turn – 19 sc

Fasten off

With the top of the hat facing you, join yarn at the right edge of the brim and sc evenly around. 29 sc

Fasten off, weave in yarn ends. Knot the elastic thread and weave in the ends.

Viola!