and fold the corners as such.
Put one piece over the other like so.
Fold the corner of the paper that is under, and tuck it under the diagonal edge of the paper above.
Do the same with the other corner of the paper above.
Flip them over and fold the corners of the other piece of paper and tuck them under the slots in the middle of the other paper.
And it’s ready to be thrown!
Source: Filipp