Poorly executed, inaccurate likeness, disproportionate features, crude craftsmanship, unimpressive pose, lack of detail, bland expression, unconvincing hair, unnatural lighting, out of place in the Vatican Museum, controversial subject matter, disrespectful to traditional Roman art, low-quality material, lack of historical authenticity, lack of artistic skill, grotesque appearance, jarring coloration, poorly integrated into the museum's collection, unflattering portrayal, lack of finesse in the carving, lack of emotion in the face, lack of cultural relevance,  Poorly drawn, distorted features, exaggerated proportions, unnatural color choices, lack of resemblance to Princess Diana, awkward poses, amateurish style, unappealing eyes, messy linework, flat coloring, lack of emotion, generic manga template, lack of attention to detail, unflattering portrayal, inconsistent anatomy, lack of depth, uninteresting background, lack of grace, lack of elegance, uninspired composition, lack of storyt