6. Aim for a versatile haircut.
Choose a flexible haircut that can be worn to the left, to the right, parted in the middle, brushed back, or combed forward. That way you can vary your look, because there's nothing more boring than looking (or sounding or behaving) exactly the same all the time.
For fun, work a stray lock into your 'do, for a look that's casual but not messy.
Experiment with product on the weekends. With a little gel, spike up your hair and spice up your life!
But don't get carried away with it.