Pixelated or Blocky, Unrecognizable Silhouettes, Unintentional Distortions, Clashing Colors, Dull or Flat Colors, Unnatural Lighting, Unbalanced Composition, Unappealing Background, Lack of Depth or Dimension, Unprofessional Style, Inconsistent Artistic Style, Unintentional Cropping, Unpleasant Facial Expressions, Unconvincing Perspective, Lack of Detail or Textures, Unclear or Misaligned Elements, Unintended Noise or Artifacts, out of focus, out of frame, cut off painting, cut out of frame