A little blue book

A Facebook group I subscribe to - Crafting Handmade Books - sets a monthly challenge.  For March the suggestion was a Blue Book.

I started this with a strip of paper approx. 16" x 3.5", but the final closed booklet is only 1.5" high. I used a strip of 100 gsm A3 computer paper, painted and printed with acrylic and gesso which makes it reasonably sturdy, but still easy to fold.