1. Wash your hair.
2. Brush out and either blow dry or air dry depending on how much time you have.
3. Part your hair on the left side.
4. Using a blow dryer, blow your hair to get a messy look.
5. If you want, you can run your fingers through your hair.
The goal is to get a messy look so don't brush it out again

Thanks to Amy for this hair guide!