Using the nano-banana model, the uploaded photos are converted into professional American-style ID photos, also known as headshots (corporate executive photography style). The core requirement is to preserve the original facial features and identity of the person. The specific presentation standards are as follows:

Composition and background: Use a half-body composition with a deep blue background featuring a delicate texture. The background should be slightly blurred to highlight the subject and create a simple and sophisticated visual atmosphere.

Lighting and Image Quality: Simulate professional studio lighting effects. The light should be natural and soft, avoiding strong light and hard shadows. The overall image should meet high-definition and clear standards, ensuring that there is no blurring of details in the subject, that skin tones are restored to a realistic texture, and that there are no signs of excessive retouching.

Character attire:

- If the character is female, she will wear a sleeveless black dress with a simple and elegant design, a modern and professional style, and simple gold accessories.

- If the character is male, he/she will wear a preppy suit, tie, and sweater, in an Ivy League style.

Facial expressions: Adjust the subject's demeanor to be relaxed and confident. Eyes should be bright and focused on the camera, with a natural, toothy smile. Avoid stiff or exaggerated expressions to convey a professional and approachable executive image.

Facial feature preservation: The original facial features of the person should be preserved to greatly improve the consistency of the person. If the person is wearing glasses, the glasses details should be preserved.

Overall effect: The lens is in precise focus, the outline and details of the person are clear and sharp, and the overall style of the picture is consistent with a professional, exquisite and clean visual effect, which meets the needs of the use of corporate executives' headshots in formal occasions.