Here's a different paper-craft project.
I've used a sturdy 12 x 12 scrapbooking paper for construction.
Outside measures: 6 inches x 11-3/4 inches
Lid measures: 8.5" square
Four inner boxes are cut from 8 inch square
This project had been given to me in a printed format. It is available online, though none of the printed pages I have, show any reference to the website. If you have seen it elsewhere, I'm happy to add an acknowledgement with link, so all can access the construction details.