I also bound a couple of miniature Greek Coptic books using backed quilt squares. Here are some images of them.
I learned how to bind a Greek Coptic book a couple of years ago. I bound two at that time. It is such a beautiful book; which I hope to teach in the future. I recently revisited the structure to practice and hone my skills.
Completing these books was a great way to relearn this structure. I hope the opportunity to teach the Greek Coptic arises!