Using the tip of the triangle pointed to the rear and the center crease as guides, pull the paper in toward the center on each side as shown in the first to fifth photographs.

After establishing the creases you will fold along, tuck the folded trailing edged in along the existent creases you made before. When this is done correctly on both sides, things should look as they do in the fourth photograph. Once this is done, unfold these folds.

Tuck the underlying layers into the pockets of the triangle as shown in the seventh photograph. Then make a matching fold on the other side. After this is done, pull the outer layers inward and insert their tips into the triangle.

Pull the triangle forward until you can go no further to complete this step.