Summarize the following:
Hold the blow dryer a few inches away from your hair and dry your hair completely, moving your hair in the direction you want it to go. Avoid towel drying, as this can muss up your hair and worsen any existing cowlicks. Air drying can also worsen existing cowlicks and prevent them from staying flat. As you blow dry and clip your cowlick down every day, your cowlick should flatten and stay in place over time. If your cowlick resists your training, try using more clips or use hair gel to bridge the gap.

Summary:
Blow dry your cowlick. Repeat this process daily.