Here are the instructions to make an origami ninja star:
Start with two square papers, with the colored side facing down.
1. Fold both papers to the left and unfold.
2. Fold papers downwards and unfold.
3. Fold the top and bottom to the center.
4. Fold downwards.
5. Fold the corners as shown.
6. Fold the right and left edges so they match the picture below.
7. Rotate both fragments.
8. Flip over the right fragment.
9. Put the left fragment on top of the right fragment.
10. Tuck the top edge to the pocket on the left.
11. Tuck the bottom edge into the pocket on the right.
12. Flip the item over.
13. Put the right edge in the left pocket. (Rotate it after you are done with this step so that it matches the picture below.)
14. Put the right edge to the pocket on the left.
You have completed the ninja star!