Directional One Light
Have a person with a backdrop and have one light that moves into the following position
Light over shoulder of Camera
The light in this picis showing very little shade on his face but where there is shade its very harsh.
45 Degrees to the right of Camera
the light only covered half his faceand had more of a softer transition than Idirect to the face
Light 45 degrees to the left
in this picture the light is making a much easier transitioin of shade
light 180% to the subject's left
Light is very harsh and covers theface in shade