How to Make a Paper Ninja Throwing Square

O.K. I'm new at this so be considerate. Here it is.
Credit for this design goes to my friend Jeffery.
Please leave comments.

1 piece of paper.

Fold in half 2 times.

Make sure that the non-creased part of your paper is facing away from you. Then make a diagonal fold in the middle. Keep in mind that the cleaner the fold, the better the final project will be.

Take the paper part facing left and fold it over. Then take the part pointing up and fold it down.
End up with picture three.

Flip it over.

Take the left facing part and tuck it under the flap first, then take the top pat and fold it down under the flap.

I hold it like that in the picture, but it doesn't matter. Just flick your wrist before you let go.
Go be a wanna-be ninja!