Fold one corner over..
and then the other
fold one side over to exactly the middle
repeat the same with the other side
Fold one side over, to the middle of the opposite fold (marked with a yellow line)
then fold the other fold over
The result is a strip,
which is an ideal base for the basic slide, twist wrap, the criss cross and criss-cross bow knot. It looks also lovely when just hanging loosely of the neck, or draped several times around.