How to make an origami menko out of single square paper

(page 6)

9th picture of origami menko out of single square paper

09.

Apply the horizontal "valley-fold" of the step #8 and then unfold.

Prepare to rotate the paper by 90 degrees.

10th picture of origami menko out of single square paper

10.

Rotate the paper by 90 degrees.

Prepare to apply a horizontal "valley-fold" and then unfold.