distorted proportions, unintentional asymmetry, jagged lines, disproportionate facial features, inconsistent lighting, unnatural poses, incoherent perspective, unintended anatomical anomalies, inexpressive or unnatural facial expressions, overly busy or cluttered composition, unintended visual noise or clutter, inconsistent line quality, excessive or uneven shading, lack of cohesion among smaller personas, ambiguous or confusing visual elements