Cloche Hat - pattern

I'm trying to achieve the perfect crochet cloche hat. I haven't found the perfect pattern online, but mixing Marlo's Lady Cloche with A Little Bit of Funk by Janelle Schlossman, I've done this. It isn't perfect yet but it will be with a little of work. I'd love a slightly larger brim and a straighter line of the head.
Anyway there is the pattern :-)

SINGLE CROCHET CLOCHE



Gjestal - Pure wool - Chunky : 1 spun Ultra Blue + a few mt of Deep Gold
Gauge: 5 sc x 5 rows = 4"x4" (10 cm x 10 cm)
Hook size US H8/5.00 mm

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Do not join rounds, mark the beginning of each round
Chain 2

Round 1 : 8 scs in 2nd ch from hook
2 : 2 scs in each st a, working only one sc in last st (15)
3 : 2 scs in 1st st, sc in next 2 sts, repeat a (20)
4 : 2 scs in 1st st, sc in next 3 sts, repeat a (25)
5 : 2 scs in 1st st, sc in next 4 sts, repeat a (30)
6 : 2 scs in 1st st, sc in next 5 sts, repeat a (35)
7 : 2 scs in 1st st, sc in next 6 sts, repeat a (40)
8 : 2 scs in 1st st, sc in next 7 sts, repeat a (45)
9 : sc in each st a
10 : 2 scs in 1st st, sc in next 8 sts, repeat a (50)
11 : sc in each st a
12 : 2 scs in 1st st, sc in next 9 sts, repeat a (55)
13 : sc in each st a
14 : 2 scs in 1st st, sc in next 10sts, repeat a (60)
15 : 2scs in 1st st, sc in each remaining st a (61)
16 : 17 : sc in each st a
18 : sc in next 6 sts, *2 scs in next st, 1 sc in next 11 sts, rep from * 3 more times, 2 scs in next st, sc in next 6 sts (66)
19 : sc in each st around (66)
21 : 1 sc in same st, *1 sc in next 12sts, 2 scs in nest st, rep from * 3 more times, 1 sc in next 14 sts (70)
22 - 26 : sc in each st a. Join w sl st (70)
27 : change to yellow sc in each st a. Join with sl st (70)

BRIM
28: back to blue. sc in next 7 sts, * 2 scs in next st, 1 sc in next 10 sts, rep from *, 1 sc in nest 7 sts (76)
29: Sc in each st
30: change to yellow. Sc in n each st around. Fasten off!