Chain multiple: 12 + 5

Stitch Guide

Puff stitch (Pst): *YO, insert hook in specified st and draw up a lp to height of a dc; rep from * twice more in same st; YO and draw through 7 lps, ch 1: Pst made.

Picot: Ch 3, sl st in base of ch: picot made.

Shell: In specified st work (Pst, picot, ch 5, Pst, picot): shell made.

Double triple crochet (dtr): YO 3 times; (insert hook in specified st and draw up a lp, YO and draw through 2 lps) 4 times: dtr made.

Instructions

Row 1: Sc in 7th ch from hook, *(work picot, ch 3, sk 3 chs, sc in next ch) twice; work picot**; ch 5, sk 3 chs, sc in next ch; rep from * across ending last rep at **; ch 2, sk next ch, dc in last ch; ch 1, turn.

Row 2: Sc in dc, work picot; *ch 3, sk next picot, shell in next picot, ch 3**, sc in next ch-5 sp, work picot; rep from * across, ending last rep at **; sc in turning ch-sp, work picot; ch 7, turn. 

Row 3: PS in first picot, work picot; *ch 3, sc in next ch-5 sp, work picot, ch 3**; sk next picot, shell in next picot; rep from * across, ending last rep at **; Pst in last picot, work picot, ch 2, dtr in last sc; ch 1, turn. 

Row 4: Sc in dtr, work picot; *ch 3, sk next picot, shell in next picot, ch 3**, sc in next ch-5 sp, work picot; rep from * across, ending last rep at **; sc in turning ch-lp, work picot; ch 7, turn.

Rep rows 3 and 4 for patt.