With MC, ch 76. Sc into the 2nd ch from hook and in each ch across – 75 sts. Ch 1, turn.
Work in sc, following chart. When chart is complete, fasten off.
With RS facing, join MC with a slip st in any corner. Work 73 sc evenly spaced along
the top and bottom; 100 sc evenly spaced along the sides; and 3 sc in each corner. Break off MC. Join C and work 5 rnds in sc, working 3 sc in each corner, each rnd. Break off C. Join MC, ch 1, work 1 sc in each of next 3 sc, *(ch 3, slip st in first ch) picot made, 1 sc in each of next 3 sc; rep from * around, adjusting sts so that picot is in each corner.
Join with slip st to beg ch. Fasten off