Ok, so I want to try making a Queen size quilt. It will be made with 12" blocks. Half of those blocks will be 9 patch blocks. I want 2 colors per 9patch block. How do I figure out how much fabric of each color I will need? Remember, only HALF of the blocks are nine patch blocks... so I would need to figure out how many 12" blocks equal a queen quilt, and then cut that number in half. Then I need to figure out how much fabric of each of two colors I need for those blocks. Can anyone help?