masterpiece illustration low angle closeup of a child sitting on sandy beach with a delightful smile, featuring an adorable face with exceptionally detailed big eyes, blonde pigtails, building a sandcastle with a colorful plastic bucket, dramatic sunlight casting lens flares, surrounded by seashells and sea life, presented in stunning 16k UHD HDR quality, no cloned features, maintaining natural proportions, crystal clear resolution without distortions or distractions like text or watermarks, capturing a serene seaside moment without extraneous elements outside the frame.