<human>:  How do you draw a realistic portrait?
<bot>: To draw a realistic portrait, begin by gathering reference photos of the subject. Observe the details of the facial features, such as the nose, lips, eyes, and hair. Sketch the basic outline of the face, then gradually refine your sketch until you're satisfied with the proportions. Once the proportions are correct, it's time to add details such as the eyes, nose, and mouth. Using a pencil, carefully add the small details, such as wrinkles and freckles. Finally, use the reference photo to add in the necessary shading to bring the portrait to life.