How to Origami Flip Flop

Fold the square origami paper diagonally and unfold it, then fold the sides of the diagonal lines to make a rectangle, unfold it again.

Turn the paper over and fold the four sides toward the center line and unfold again to create eight diagonal lines.

Clamp down on the two diagonals of the folded paper and fold them opposite each other. Then, fold the two adjacent corners in half and flatten them.

Fold the left and right sides along the center line and lay the left one flat. Fold the piece of paper above the fold line upwards and turn it outside to the center line. Fold the lower piece of paper up and fold the east and west ends along the diagonal fold path.

Flatten the right side. Fold the piece of paper below the fold line upward, turning it outside out to the center line. Fold the piece of paper above the fold line up and fold the east and west ends along the diagonal fold path.

Turn the paper over and push your fingers to loosen the paper so that the crease becomes a "mouth" shape.

Finally, fold this "mouth" crease inward and let go of the paper to turn it into a three-layered pocket, which can be folded and labeled with stickers or white paper to write numbers or pictures.