I made my own book cloth to use to cover a hand made book. You can use printed material or print your own. I printed my own cotton muslin with things I had collected from the park: leaves, petals, etc. I used normal printmaking ink, Caligo with extender, the material was backed onto paper and glass to make it stable.
Once printed I will use it to cover a book, it’s quite fragile, and I can’t iron it to seal the inks as you would with fabric painting inks.