Incomplete and haphazard lines, dull and lifeless artwork, lack of depth and realism, disproportionate elements, distorted shapes, poor coloring and shading, lack of intricate details, blurry lines, disorganized composition, unrealistic and chaotic environment, garish and mismatched colors, lack of atmosphere and mood, flat and uninteresting style, lack of creativity and originality, rough and unrefined textures, pixelated or low-resolution output, amateurish and unprofessional execution.