Patti in answer to your question, the beauty of this is you donīt have to quilt in the ditch because you have already done your quilting. As long as you remember to quilt no further than your 1/2" marker you first put on the squares. You need that little bit of flexibility when you turn it over to seam your 1/4" blocks together.
Glad you got the hang of the QAYG Tute