Step 2: Create Waves
Using a flat iron, pick up random pieces and create waves. Clamp a one-inch section in the iron. Give the hot tool a quarter-turn and then slide it down to the ends, keeping the plates closed. It's the same technique you would use to curl ribbon on a Christmas present.
The top layer of hair should all float away from the face. Next, alternate direction as you get behind the ears and underneath for a beachier look. If your hair holds curls well, give the ends a tug while the strands are still warm. Hold for three seconds while it cools down. Then release to get a more relaxed wave.
Source: Benjamin Stone