Before you get out your liner pencil, you need to get rid of any stray hairs, so it's time to get out your tweezers. But before you start plucking, determine where your eyebrows will start and stop so you don't pluck hair in that area. To achieve a well-balanced brow, there are a couple of tricks you can use to make sure they're in the right place. Take a pencil and hold it vertically against your nose. Where the pencil meets your brow line is where the brow should start. Then, move the pencil to the outer corner of your eye; where it meets your brow should be the end point where it starts to taper down. You can mark the beginning and end points by using a white eyeliner pencil.
Using your tweezers, only pluck stray hairs from the areas outside of the white pencil marks. If your brow hairs are long, trim them before you start tweezing so you can see and follow the natural shape of your brow. Once you've established the path, take your pencil and start filling in your brows with light, feathery strokes. To add drama, you can play up the arch a bit, going a little higher than your natural brow line. If you need a little help, you can always turn to an eyebrow stencil that will help you create a definitive shape. But you should never draw a solid line unless you want it to look like your brows are drawn on.