well... there are many techniques for doing this.
1. Use a loooong rectangular scarf. Tie at once side, then wrap all the way to the next side and secure with a brooch or maybe even a safety pin.
2. braid it on- use 2 loong scarves, using the strap as the 3rd piece and braid away. then secure with a pin or brooch or tie it.
3. tie it- just tie it on the side and secure with either a knot, a pin or a brooch, use any kind for this technique