GregB, I checked out Erica Plank's video and that's the old way of making Cathedral Windows. I'm using Missouri Star's method that uses much less fabric though I'm finding out it still comes out fairly heavy when making a queen size quilt.
Yesterday I matched up strip sets, adding the next set of squares in the center and folding over the windows (flaps). It's tendious trying to stitch down those flaps no matter how I roll it but thanks for your input. So far you're the only one that came out with a reply and suggestion.
I'm now down to stitching the flaps in the center row, then I have the last row to add and stitch down the flaps.