Begin:
Crease in half, non-diagonally:
Unfold:
Crease in half, diagonally:
Unfold. Now crease in half diagonally the other way:
Unfold. You should have creases that look like this:
Fold the edges inwards and it should automatically take this shapes if your creases are correct:
Take one corner up and fold it to the top:
Repeat with the other corner, flip it over, and repeat with the other 2 corners on the other side:
Take the side corner and fold it inwards:
Repeat with the other 3 corners:
Peel down the top corner and tuck it into the thin pocket that you created in the previous step:
Flatten it:
Repeat with the other 3:
Crease the top and bottom tips like so:
Pull the corners where the creases end out. If you want, you can blow into the hole in the bottom to "inflate" it. But that's unsanitary.
