Blurry, poorly defined signs, dull colors, lifeless eyes, unnatural glow, awkward posing, amateurish, lack of detail in ghost's features, unrealistic shadows, flat texture, generic appearance, overused effects, unimpressive composition, low resolution, unconvincing transparency, bad shading, lack of depth, exaggerated features, poorly integrated with the background, cheap artwork, overly simplistic, lack of creativity, uninteresting symbols on signs, lack of atmosphere, awkward proportions, unrealistic lighting.