Like many people, one of my brows starts further from the bridge of my nose than the other, and I need to fill it in to match. "That part is the hardest to fill in," says Van Jones. "Use the lighter color of shadow and turn the brush sideways so it's perpendicular to the brow." The line should go up and down, along the bridge of your nose.

And you want to be sure you're starting it in the right place. "It should line up with the middle of the nostril," explains Van Jones. "Not the outside of the nostril — that's too far apart."

Image via Imaxtree

Here's your last step in mastering how to shape eyebrows like an ace. After you've successfully filled in your brows, use a brow gel to hold them in place.

Starting in the middle, brush the hair straight up, then pull the outer section (the tail) outward. Try Sonia Kashuk Brow Gel, $5.99, or Glossier Boy Brow, $16, which has a thickening formula and comes in three tints.