This document provides instructions for creating a realistic eye by: 1. Filling the background with flesh tone and writing an eye color on separate layers using diverse colors. 2. Creating a circular selection filled with the first letter's color to form the iris. 3. Adding smaller circular selections filled with black to form the pupil and overlaying swirly lines between the layers. 4. Using brushes, the smudge tool, and varying colors and strokes to blend the iris colors and add definition. 5. Adding white highlights and optionally adjusting the colors and shape using adjustment layers and transformation tools.