AN INTEGRATIVE APPROACH TO EYEBROW SKETCHING: GEOMETRIC ANALYSIS AND LIGHT-AND-SHADOW MODELING IN THE PROFESSIONAL SKETCH TECHNIQUE

This article presents an integrative approach that combines geometric analysis with light-and-shadow modeling in the process of eyebrow sketching, referred to as the “Professional Sketch” technique. The study is based on a review of existing research and publicly available data. It introduces a five-point reference system that ensures precision and symmetry in sketch construction, along with a gradient shading technique that leverages light-and-shadow modeling to create natural volume and depth.