How can I create a stable paper airplane that flies smoothly and efficiently?

To create a stable paper airplane that flies smoothly and efficiently, follow these steps:

1. Use a lightweight and sturdy paper, such as printer paper or origami paper.
2. Fold the paper carefully and precisely to create symmetrical wings and a balanced body.
3. Ensure that the wings are angled slightly upwards to provide lift.
4. Add small paper clips or tape to the nose of the airplane to add weight and improve stability.
5. Test fly the airplane and make adjustments as needed to achieve the desired flight characteristics.