First of all, I repaired the torn pages using paste and Japanese paper.
Once all the pages held together, I punched some holes on the spine and sew the booklet as a single signature.
I glued a couple of folded covers on each side of the signature. Aside, I made the leather cover and decorated it. She wanted the name of the book on the low right corner and some other tooling on the center.
I glued the endpapers in the cover and the book was done!