Other yarn option: De Rerum Natura Ulysse

With contrast colour, on 3mm needles, CO 80 sts.
Work 22 rows in k1p1 ribbing.
K8, m1 around (+10 sts) 90sts
Switch to 3.75mm needles and work 4 knit rows.
Switch to main colour, work 2 rows.
Work chart.
Work 1 row in MC.
Divide crown into 6 (15sts) and work decreases every round: k to marker, sm, slip stitch kwise, k1, psso around.
When 6 sts remain, run yarn tail through the remaining stitches.