7

Do the same on the opposite side.

8

Then fold the left and right corners to the central line to form a hexagon. Do the same on the opposite side.

Fold a top flap and bring the top point towards the center. Then fold it again toward the top of the triangular pocket to crease a line for slotting.

Slot the small triangle into the central triangular pocket. Do the same to the other three pockets.