Book du jour - turkish map fold

What you can do with one sheet of A4 paper - one big fold and three sets of double folds (glued together) - the sliver at the bottom is all that was left -

I used these instructions but found I preferred folding up the paper before making the corner folds -
Turn them over and what do you get? -
Another discovery was that, under pressure, the printing inks (or rather the binder - these are for textile printing) will stick together.

Next, cutting an A4 sheet in half to make ... what ...