I sandwich each block individually, making the backing about an inch or two larger than the block itself. Then you quilt. Once you get them quilted, place the backings of your blocks right side together and sew a straight seam. That will leave you with two pieces sticking out that you can fold over the unfinished edge of the block and stitch in place! I hope that makes sense...I am getting ready to start a new one here in a few days. I will try and post some pics then!