I'd like to know. I made a huge error on my son's wildlife quilt and I never noticed until I saw its finished picture. It is now a design decision. I planned cornerstones in the borders so the flying geese wouldn't run into each other turning the corners. Two opposite corners have eagle blocks and the other two have colliding geese. At least they aren't on the same side. I can't change it and he wouldn't care if I did tell him, so I'm okay with it. I did learn something so all is not lost.