I'm going to do this one in a 12 1/2". That middle looks just too little for a 6 1/2" !!! At least at the moment, and this and next week may have to wait until the week after Christmas. I designed a block today, so proud of myself. I even did it with the layout like you do. It's for our out-going President of the Quilt Guild here in town. And I'm calling it Amy's heart. Whose heart is as big as the whole outdoors. I'll need to make a label, and write a poem to go with it.