(Note: In all chain stitches, work behind the vertical bar.)
Step 1: Start with 18 ch foundation chain, then from 2nd st of hook: 12 sc, (2 sc in next st) *2 times, 1 sc, (2 sc in next st)*2 times.
Step 2: turn, 1 ch, 2 sc, 2 sc in next st, 4 sc, 2 sc in next st, 13 sc.
Step 3: turn, 1 ch, 13 sc, 2 sc in next st, 2 sc, (2 sc in next st)*2 times, 2 sc, 2 sc in next st, 2 sc.
Step 4: use another yarn, make 5 ch, connect to the top of the piece with 3 ss, 6 ch, from 2nd st of hook:, 13 sc, turn, 1 ch, 13 sc, turn, 1 ch, 13 sc.