I need 3D CAD models for 18 decorative cladding panels, each measuring 1 meter x 1 meter. The panels should have a modern style, resemble concrete, and feature patterned textures or finishes. Requirements: - 18 unique designs - Modern aesthetic - Concrete-like appearance - Patterned textures or finishes Ideal skills and experience: - Proficiency in 3D CAD software - Strong design skills with a focus on modern aesthetics - Experience in creating textured or patterned surfaces - Knowledge of materials, particularly concrete Please provide samples of similar work.