Cutting the Squares
To decide on the size to cut for your background block you need to multiply the finished size desired by 2 and then add 1/2" for your seam allowance. In the following table there are some measurements that could be helpful to begin:
Background Fabric  | Window Fabric  | |
Finished size: | Cut a square: | Cut a square: |
2" | 4.5" | 1.25" |
3" | 6.5" | 2" |
4" | 8.5" | 2.25" |
5" | 10.5" | 3" |
6" | 12.5" | 4" |
