I made one of her star quilts for my little grandson. Although it's much smaller than yours, I changed it from square to rectangular by adding a strip of arrows, as shown in the picture. If you look into Seminole strips/borders, you'll find some ideas that might fit with your theme.
You'll do a wonderful job and be very proud of your results.
BTW, Diane is very responsive with email :-)
Lakota Star quilt
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