....then....

		10. Fold the top flap down and crease hard...
		...to get this. Now fold it the same way in the opposite direction.
		11. Open up one side, and lay it flat.
		12. Lift the top flap on the open end (the lower end in this picture) and fold it upwards, bringing in the sides...
		...like this...
		... and lay flat to get this.
		13. Flip the paper over and repeat steps 11 & 12 for the other side...