Summarize this article in one sentence.
Start your part at the very center of your forehead. To do this, place your finger at the middle of your hairline (directly diagonal between both of your eyes). If you have a widow's peak or reverse widow's peak, use it as a guideline or try lining up your part with the tip of your nose. Then, separate your hair so 1 section is on the left side and 1 section is on the right. Middle parts are a great choice if you have a round shaped face. Look in the mirror as you part your hair to make sure that you get a straight, even part. Instead of using your fingers, you can use the end of a comb to make your part. Simply place the tip of your comb at the middle of your hairline, and draw a straight line down the middle of your head. Remove the comb when you reach the crown of your head. Once you've made your part, you can comb through both sides so your hair lays flat. Using the teeth of the comb will result in more tangles instead of a clean part. This creates a clean, defined part in the middle of your head. If you have a natural cowlick in the middle of your hairline, 1 side of your part may look more voluminous than the other side. If you want to even out both sides, shake your fingers through your hair to fluff your hair up on the flatter side. This lifts your hair up so both sides look even. You can also spray a little hairspray on the flatter side to keep the hold. A cowlick is a lock of hair growing in a different direction than the rest of the hair around it.

Summary:
Divide your hair into 2 even sections, following your hairline. Use the tip of a rattail comb to separate your hair to make a precise line. Style your hair so both sides are even if 1 side looks more voluminous.