This video shows you how to create a realistic shadow of window blinds over the picture of a boy in a photograph that had no window blind shadows using Photoshop. Creating a separate layer, he creates shadows first by using the rectangular marquee, then filling in with black and copying the black stripes across the photograph. The opacity is set to 40%. The shadows look like a casting of the shadows of window blinds over the boy, but is not as realistic as he wants them to be. He then makes a displacement map to make the shadows more realistic. The bumps that the displacement map creates causes the shadows to curve a small bit and looks more realistic. You will learn how to use Photoshop to create this effect on a photograph.