Get a square handkerchief and fold it in half diagonally, to form a triangle. Roll the handkerchief from the tip of the triangle down towards the other end and secure in the middle with a piece of thread. Drape the handkerchief around your neck and cross the ends over. Place one end behind the other then bring it up and out to the front. At this point make sure that the lengths are even and then cross the ends again; pull one end through the loop.