I attended a Zoom course hosted by Erin Fletcher at Herring Bone Bindery -
https://www.herringbonebindery.com
It was a Saturday and Sunday morning class and we completed 2 versions of the flatback case binding. It was a bunch of fun.
I bought a second set of supplies, and completed these as well.
The decorative cover art was purchased off of Etsy and printed on my Epson 15000 printer.
Take a look at these stores
https://www.etsy.com/shop/AdventurePatterns
https://www.etsy.com/shop/Altendi
https://www.etsy.com/shop/ArtfulFairies
https://www.etsy.com/shop/mooreandmountain