Drawing a portrait offers many fascinating challenges for the artist, as the infinite variety of human characteristics makes every portrait unique. At first, correct structure of the head and placement of features are the main concerns, but once you are comfortable with these aspects of portrait drawing, the subtle differences in physique and expression that create a true likeness become quite absorbing. Soon you will find yourself studying the faces of people you meet, and television interviews become art lessons as you observe the bone structure of the speaker and note the reflected light on his or her face.