finger through lips (penetration error), deformed lips (split, extra corners), mismatched eye color or asymmetry, glasses reflections showing unintended objects, unnatural nail shape/color, missing or duplicate rings, overly smooth skin (no texture), plastic lips, double chin, messy hair obscuring face, harsh shadows on nose, studio grid visible, watermark, text, open mouth, tongue visible, exaggerated makeup, anime eyes, cartoon shading