Tied up newborn hat - crochet pattern

I want to make sure I never forget how to make this hat! 

Worsted weight yarn.

J hook

Magic ring, chain 1, make 3 sc in ring, continue to sc in rounds
Round 2: 2 sc in each stitch around (6 sts)
Round 3-16: sc in each stitch around (6 sts)
Round 17: 2 sc in first stitch, sc in next two stitches, repeat around (8 sts)
Round 18-20: sc in each stitch around (8 sts)
Round 21: 2 sc in first stitch, sc in next three stitches, repeat around (10 sts)
Round 22-24: sc in each stitch around (10 sts)
Join rounds from here on. Work in back loops of last 2 sts in each row to the end.
Round 25: sc in each stitch around, join, chain 1 (10 sts)
Round 26: 2 sc in each stitch around, join, chain 1 (20 sts)
Round 27: sc in each stitch around, join, chain 1 (20 sts)
Round 28: 2 sc in first stitch, SC in next, join, chain 1 (30 sts)
Round 29: sc in each stitch around, join, chain 1 (30 sts)
Round 30: 2 sc in first stitch, SC in next 2 stitches, join, chain 1 (40 sts)

Round 31-33: 2 sc in first st, sc in next 7 sts, repeat around (45 sts)

Round 34-43: sc in each stitch around (45 sts)

Fasten off and weave in ends.
Tie knot in the top of the hat.