With the "m" shape figure, fold across the diagonal lines on the front and back flaps of the model making creases. Take the flap at the corner pulling it upward to form an isosceles triangle as in figure 8. Do the same with the other flap to look like figure 9. Turn the model over and repeat .
Pulling up flap and creasing other side.
Pull up second flap. There should be four individual flaps on top of a rectangle.
Pivot model 180 degrees, so that the flaps point downward.
Pull the side of the triangle up. Crease the other side the same way. Where the bottom triangle is there should be a mountain fold at the arrow. Put your thumb under the crease and fold up the edge to the side of the triangle using the creases made in figures 15 to 17. So that it appears like figure 19.