This pattern was one of the many I designed during January: "Frances." It is 12-inches in diameter. I used a 2.00mm hook with size 10 thread (250-300 yards).
The pattern is 30 rounds and works up very quickly. There is one round of popcorns that might slow you down, but thankfully it's closer to the center, so it's not too long.
You can find this pattern in my pattern shop.