This quick video will teach you how to make the most effective paper airplane. Follow these steps to make a very effective paper airplane: You will need a sheet of computer paper. Fold it in half and open it back up. Fold in the top corners. Fold the top half down. Fold the corners down and fold up the little area in the middle to hold down the flaps. Fold it backwards and fold the edge of the wing to the bottom of the plane. Repeat for the other side. Hold your plane at the triangle, and throw it lightly.