You can vary the height of the light source to change the width and placement of the rim of light created by this technique.
Rim lighting is more about the highlights the light creates than it is about the shadows. With rim lighting, most of the face is in shadow, but there is a narrow rim of light on one side of the subject’s face. As with Rembrandt lighting, the light source will be positioned at about a 45 degree angle from the subject, but it will be behind the subject instead of in front of the model. You can vary the height of the light source to change the width and placement of the rim of light created by this technique.