Locate Your Starting Points
Flip your tweezer upside down so the open end is pointing downward, and place it vertically alongside the outer edge of the bottom of your nose. The point where the vertex lands marks the beginning of your brow (which should also be about one inch above the inner corner of your eye). Using an eye pencil, draw a vertical line to demarcate the start of each brow, then check that the space above the bridge of your nose is centered between them. Remove the strays that fall in between.
Grab strands right at the root and slowly pull them out
Mark Your End Points
Lay the tweezer on an angle against your cheek so that the open end is at the bottom of your nose and the other end reaches the outer corner of your eye. The spot where the tweezer intersects your brow is where the hairs should end. Mark it with the eye pencil, then pluck the hairs beyond the line.
Determine Your Brow Thickness
Starting just below the fullest part of your brow, use an eye pencil to draw a line along the bottom edge of your brow; it should be above any stray hairs and it should follow the natural shape of your brow’s top line, which may be angled, slightly curved, or even straight. Pluck the strays below the line. Ultimately, your brows should be between a quarter inch and a half inch at their thickest.
Shape Your Arch
Look straight into a mirror. The arch should peak above the outer rim of your iris and lie right on your brow bone: “Imagine upside-down check marks, but with soft angles,” says Vucetaj. Mark the point with your eye pencil, then remove a row of hairs along the bottom, from your inner brow point to the peak point. After the peak, shape the tail.
Make it a bit thinner than the main part of your brow, tapering at the end