🛏️ Ratfactor's Illustrated Guide to Folding Fitted Sheets
Dave Gauer:
You can get fast at folding fitted sheets. But to learn how to fold fitted sheets is going to take some patience. I do not recommend learning anything, and especially not anything that involves elastic, when you’re in a hurry.
It's a long read, but take a look at the whimsical illustrations even if you don't bother with the text.