Ch4, then join with a sl st to the first stitch.
Row 1: Ch 1, *puff st (yo, insert hook into stitch, pull the strand through, do the same 4 more times then pull your yarn through all 11 loops on the hook, close the puff with a chain), ch 1*, repeat * 7 more times then join with a sl st to the top of the first puff stitch and move with a sl st into the gap between the first & second puff. 8 puff st.
Row 2: Ch 1, 2 puff st into the first gap, then 2 puff st into each gap all the way around. Note that you don’t chain between the stitches as you did on the first row. Once you have 16 puff st, join with a sl st to the first puff stitch. 16 puff st.
Finally, sew in the ends and you're done.