Erase all the blue guidelines from earlier and it's detail time! To make the hair look realistic, draw in a series of random lines inside of the hairlines. NOTE: The lines you draw in this step should NOT be straight! Carlisle has slightly wavy hair and the lines should always be curved in the direction the hair is flowing. In the center of the hair, it should be flowing in a slight curl to delineate that his hair is being slicked back neatly. Once you think it looks pretty good, add in the other detail lines as shown. These lines are minor and are optional, but adding them in makes your drawing look ten times more realistic than it normally would.