Base rnd, each side: Multiple of 2 + 1 + corner sts.
Begin 1 st to left of corner st.
Rnd 1: Ch 3 (counts as dc), dc in each st around, placing 5 dc in each corner st, join with slip st to top of ch-3.
Rnd 2: Ch 1, sc in each sc around, placing 3 sc in each corner st, join with slip st to first sc.
Rnd 3: Ch 1, sc in same st, *Popcorn in next sc, [sc in next sc, Popcorn in next sc]** to corner st, (sc, Popcorn, sc) in corner st; rep from * around, ending last rep at **, join with slip st to first sc. Fasten off.
Use hang tags from the office-supply store as a memory jogger. If you have to remove your hook to use it in a different project, write the hook size and brand on the hang tag and place it in the last stitch. When you come back, you’ll know exactly which hook you were using. Tag your swatches with hook, yarn, and stitch pattern information for easy identification.