Use a standard letter-size sheet of paper
Fold the paper lengthwise in half, then unfold it
Fold the top two corners down to the center crease
Fold the new top edges down to the center crease again
Fold the plane in half along the center crease
Fold each wing down so the bottom edge lines up evenly with the body
Make both wings the same size
Add small upward winglets at the tips if desired
Press all folds firmly and sharply
Keep the nose pointed and narrow
Use smooth, level throwing force
Throw it straight ahead with a gentle, fast release
Adjust the wings slightly if it dives or stalls
Use a stiffer paper for better distance
Keep the plane symmetrical on both sides