Start with a rectangular sheet of paper
Fold the paper in half lengthwise
Unfold it to create a center crease
Fold the top two corners down to the center line
Fold the new top edges down to the center line again
Fold the tip down to lock the folds in place
Fold the paper in half along the center crease
Fold each side down to form the wings
Adjust the wings so they are even
Add small upward folds at the wing tips if desired
Hold the jet by the bottom and throw it straight ahead