I need high-detail, 3D prototypes of urns with intricate Celtic relief for plaster mold production. These will be used in my ceramics business. Requirements: - Material: Plastic, Metal, or Resin (whichever is easiest for plaster molds) - Detail: High detail with intricate Celtic patterns - Size: Medium (6-12 inches) Ideal Skills & Experience: - 3D modeling expertise - Experience with detailed relief designs - Knowledge in mold-making and suitable materials