1. Unconventional Heels or Soles

• Sculptural, abstract, or art-piece-style heels

• Heels with extreme curves, hollow structures, or non-load-bearing shapes

• Non-standard sole constructions that affect balance, durability, or safety

2. Rare or Highly Customized Accessories

• Custom-molded metal parts, oversized ornaments, or moving components

• Accessories made from uncommon or hard-to-source materials

• Decorative elements that require hand-casting or complex tooling

3. Overly Complex Stitching or Construction

• Extremely intricate stitching patterns that require advanced handcraft techniques

• Multi-layer constructions with hidden seams not suitable for scalable production

• Designs that significantly increase failure risk in wear or long-term use

4. Exact Replicas of Other Brands’ Designs

• Designs that closely copy or replicate existing branded shoes

• Requests intended to recreate copyrighted or trademarked styles

• Shoes that are clearly identifiable as another brand’s signature design

5. Experimental or Non-Wearable Concepts

• Concept-only designs not intended for real-world walking or daily use

• Shoes that prioritize visual effects over comfort, stability, or durability