Use a single sheet of A4 or letter paper
Fold it lengthwise in half, then unfold
Fold the top two corners to the center line
Fold the new top edges to the center line again for a sharper nose
Fold the plane in half along the center line
Make the wings narrow for more speed
Keep both wings perfectly even
Fold a small upward flap at the back of each wing
Press all folds firmly and sharply
Use smooth, hard paper for better speed
Throw it level with a quick, strong forward motion