Start with a standard letter-size sheet of paper
Fold it in half lengthwise, then unfold it
Fold the top two corners down to the center crease
Fold the new top edges down to the center again
Fold the plane in half along the center crease
Fold each wing down evenly to make both sides match
Make the wings narrow for better distance
Add small upward wing flaps at the back edges
Press all folds firmly and sharply
Keep both wings symmetrical
Use smooth, stiff paper for better flight
Throw it with a level, steady motion
Aim slightly upward, not straight up
Adjust the wings if it dips or turns too much