Prompt: Mecha pterosaur with huge wings, black steel, dedicated machine structure, greyscale, scary, laser, smoke, very huge, sandstorm, rust, wires, tubes, wasteland, desert, mechanical, hyperrealistic, cinematic lighting, 8K, masterpiece, best quality, HDR, UHD, photorealistic, shadow, sand
Negative prompt: (bad quality), (worst quality), deformed, blurry, ugly, jpeg artifact, artifact