Avoid bright, vibrant, or neon colors, excessive ornamentation, futuristic or ultra-modern design elements, glossy or reflective surfaces, synthetic materials, sharp geometric patterns, cluttered or over-decorated spaces, overly symmetrical layouts, artificial lighting, urban or industrial features, technology-heavy interiors, overly polished or sleek finishes, cold or clinical atmospheres, extravagant furniture, maximalism, metallic textures, high contrast, busy patterns, pop art influences, bold or loud designs, chaotic compositions, luxury or opulence, glass-heavy architecture, ultra-contemporary decor, and bright, artificial colors.