Lay your scarf on a flat surface and fold it in half along the diagonal to make a triangle. (ref 2)
Look in a mirror and drape the scarf over your head, with the folded edge at your hairline and the unfolded edges hanging down the side of your face and back of your head.
Grasp the sides of the scarf and fold them over each other, so they cross at the front of your neck.
Tie the ends in back at the base of your neck. Tuck the loose back corner into the knot. Keep it loose and comfortable. Throw on a pair of big, black sunglasses and you're good to go.
Lay your scarf on a flat surface and fold it in half on the diagonal.
Drape the scarf around your neck so the folded edge is against it. The ends should be in the back and the front should be a triangle shape, kind of like a cowboy's bandanna -- but way more stylish.
Cross the ends over each other at the back of your neck and bring them around to the front. Tie the ends in a loose knot or a bow. (ref 3)
Tuck the edges in a collared shirt and you've got a neck accessory that goes above and beyond your everyday necklace.