treat the blue mark on the image as the exact position of the camera viewer the arrow shows the direction the camera is pointing recreate the scene exactly as it would appear from that point of view do not change any objects buildings textures colors or lighting only adjust the perspective so that the view matches the position and direction indicated by the blue mark and arrow everything outside the perspective adjustment must remain identical to the original image think of the blue mark as the eye of the camera the resulting image should show what the camera sees from that spot