Beautiful, full-eyebrows are all-the-fashion today. The perfect eyebrow shape is dependent upon your eye shape. Be sure to have both eyes open and looking straight ahead. Using a brush or brow pencil establish three lines of distinction. First, a vertical line from the inner corner of the eye upward-this is where the eyebrow should begin. Second, a line drawn at an angle from the outer corner of the nose to the outer corner of the eye-this is where the eyebrow should end. And lastly, a vertical line from the outer circle of the iris upward-this is where the highest part of the arch would be.