How is everyone? Hope alls enjoying the olympics - I'm trying desperately and enthusiastically to get better at Origami, my few paper cuts show progress is still to be made haha.

I'm trying to re-do my business card DIY style, so it can open up into a little box/cube, and go back to a flat design, like the following:

Does anyone know the basic principles / templates for this? Is it a take on Pandora's box?
Any help much appreciate, and I'd be happy to donate paypal rewards for those who help, including this great forum as well.
Best,
Seanami