Rule number one states simply that the face should be the focal point of every outfit. That seems obvious. Focal point = the point which the eyes are drawn to. But, have you wondered how that is accomplished?
A primary tool in directing attention to your face is the use of balance points. There are two measurable points that determine how far down the upper body the neckline should go. In addition, the collar or neckline should be at least as wide as the face. For additional information on this topic, I recommend The Triumph of Individual Style, by Carla Mason Mathis and Helen Villa Connor.
Jewelry can also create balance.