A highly detailed full-body portrait of a small child adorned with vibrant, intricate Coatl-inspired patterns, set against a dynamic cyberpunk backdrop. In the background looms a massive mecha, reminiscent of a gundam, its towering form slightly blurred by the neon-lit, bustling cityscape. The scene captures an essence akin to artstation quality, rendered in 8k with octane precision and powered by unreal engine technology. The composition adheres to the rule of thirds, ensuring a balance between the child and the monumental machinery, exuding a realistic yet conceptually artistic masterpiece quality.