In this tutorial, we learn how to draw realistic hair. Start out with a rough outline and look where the hair is clustered together. Draw the clustered area first. Then, cross hatch over the entire surface of the area and blend in. Add hair to the forehead area, then use a darker pencil to form the shape of the hair. After you do the clusters, start to draw the hair that is separated from the rest. Keep looking at the picture you are drawing, then use an eraser to change the drawing to match the picture. Keep adding layers of the pencil marks in, then you will have a head full of hair in no time.