When we look at this picture we see only light and shadow. The shadow created by light is also the value that depicts our picture. Although there are two different colors in pencil drawing, the lightness and darkness between the derivatives of these colors; gives us information about the colors of the objects. Each color has a black and white scale. From the simplest we can give the following example. When we draw a portrait, if the eyes of the person we draw is green, if you apply the ton value corresponding to that color correctly, the person who is looking at the picture can understand that the person in the portrait is green. What we have to do when drawing pictures with pencils is to be able to apply light and shadow accurately. Draw a picture in general; the shadow in the light, in the shade is to seek the light.