The document provides instructions for three photo editing techniques: skin color editing, hair color editing, and removing makeup. Each technique involves opening the photo, selecting the area to be edited using selection tools, applying a new color layer set to Soft Light mode, and using a brush tool to refine the edges of the edited area. Skin and hair color editing are similar processes, while removing makeup involves using the Paintbrush tool set to Hue or Color mode and the Eyedropper tool to sample skin color before painting over makeup areas.