How to make a 3D four-pointed origami star

(page 7)

11.

Prepare to touch the point where the arrow is with un-used finger and move following the arrow direction.

Do this for two times for each arrow point.

12.

Flatten the model.

Prepare to rotate the model vertically by 90 degrees.

If you have a difficulty in these steps, you are welcome to write a question below.