Square only came out to 9”. To bring to 11” did the following:
Rnd 15: Continue w/color A, {3 hdc in corner st, hdc in next 7, sc next, sc2tog, sc next 12, sc2tog, sc next, hdc next 6} 4 times.
Rnd 16: Yellow, {hdc, ch 1, hdc, ch 1, hdc} corner, sk next st, hdc, {ch 1, sk next, hdc, sk next} 14 times 4 times.
Rnd 17: Blue, {hdc, ch 1, hdc,ch 1, hdc} in corner hdc, ch 1, sk ch-1 sp, hdc in next hdc, {ch 1, sk next hdc, hdc in next ch-1 sp} 14 times, ch 1, sk next hdc, hdc in next hdc, ch 1, sk ch-1 sp 4 times.
Rnd 18: Soft Red, {hdc, ch 1, hdc,ch 1, hdc} in corner hdc, {hdc in ch-1 sp, ch 1, sk hdc} 18 times, hdc in ch-1 sp 4 times.
Rnd 19: {3 sc in corner, sc across to next corner} 4 times.
Rnd 20: {5 dc in corner, dc in BLO across to next corner} 4 times.
Rnd 21: 3 sc in corner, sc in next 2, {dc in FLO of next st below in Rnd 19,sk 1 st on Rnd 20, sc in next 4} 7 times, rep bet * and * once, sc in next 3 4 times.