When you take a single light to one side of your subject and grid it to trim the fall of light, interesting things happen. Rim Light and abrupt fall off of light are great ways to showcase the figure.
Valentina stretched her torso in the light and and you can see how as she twists and turns the light on her changes. Whether you use this form of lighting as key light or an accent light it’s an important form to master. Give it a go.