Marilyn's Boom 10 Design
This is the way I am setting up my finished blocks. They end up being a 20.5" square. I purposely put 1/2" between the corner of the 12" block and the sashing strips.... hoping the blocks will float up. And check out that sashing material. I found it in the fat quarter bundles at Joann's Fabric store. Couldn't have done any better than these...
hugs, Jupiter