3D Model: "Design A 3D Gothic-style Door Knocker Featuring A Detailed Human Skull As The Centerpiece. The Skull Has A Weathered, Aged Look With A Dark Metallic Bronze-black Patina Finish, Showcasing Deep Eye Sockets And A Menacing Grin. Surround The Skull With An Ornate Baroque Frame Of Swirling Floral And Vine Patterns In Dark Bronze With Subtle Gold Highlights, Giving An Embossed, Elegant Effect. Attach A Black Iron Circular Knocker Ring At The Skull's Base, With A Small Spherical Weight At The Bottom. The Piece Should Exude A Dark, Medieval Fantasy Aesthetic With A Haunting, Eerie Feel, Emphasizing Intricate Craftsmanship. Use A Transparent Background."