Missing details, inconsistent style, lack of depth, faded colors, lack of texture, lack of realism, disjointed elements, distorted perspective, lack of cohesiveness, poor quality, amateur artwork, shaky lines, poorly rendered shadows, lack of detail, flat look , lack of life, lack of atmosphere, lack of focus, poor lighting, floating elements, lack of proportion, disproportionate elements, generic look, lack of dynamism, lack of context, lack of prominence, uninteresting composition.