This document provides information on various studio portrait lighting techniques, including Rembrandt, butterfly, and edge lighting. Rembrandt lighting uses a single light at a 45 degree angle to create a triangular highlight under the eye. Butterfly lighting positions the key light high above and in front of the subject to cast a butterfly-shaped shadow. Edge lighting uses side lighting to define one side of the face, creating higher contrast. The document explains the setup for each technique and provides examples of their use in portraits. It instructs photographers to practice these techniques in groups and present example images, with analysis of any technical errors encountered.