Many have asked. It’s easy!
Step 1 – fold sheet in half from top to bottom.
Step 2 – tuck top corners into bottom corners
Step 3 – fold sheet in half again (quarters) and tuck double corners into each other (now 4 corners will be all tucked together)
Step 4 – fold into a rectangle, then continue folding to the size you want. This is a King Size, so I trifold
Voila! Easier to store!