Take two square sheets of paper, fold them in half to the left to make a crease and unfold.
Fold in half downwards and unfold.
Fold the top and the bottom parts to meet the center line.
Fold in half downwards.
Fold the corners as shown.
Fold to make the top and bottom edges meet the center line.
Rotate both fragments.
Turn the bottom fragment over.
Put the top fragment on the bottom one.
Expand the pockets of the top fragment.
Insert the flaps of the bottom fragment into the pockets.
Turn the item over.
Expand two central pockets.
Insert the side flaps into the pockets.
The ninja star is complete!