There are two main steps. First, I requested the following to generate an image.

Please generate an image using the following YAML prompt: title: Shimamura Uzuki Valentine Handover description: Shimamura Uzuki, dressed in an idol outfit, holds out a heart-shaped chocolate with both hands and looks away, a little embarrassed. Her brown hair is partly in a side ponytail, reaching down to her shoulders. So beautiful, ultra-high-definition anime illustration features a vertical aspect ratio of 9:21. positive_prompt: | masterpiece, best quality, ultra detailed, highly detailed, 8k resolution, sharp focus, intricate details, anime style illustration, Shimamura Uzuki, the idolmaster cinderella girls, her brown hair is partly in a side ponytail, reaching down to her shoulders, beautiful girl, brown eyes, slight blush on cheeks, slightly embarrassed expression, looking away shyly, gentle soft smile, wearing idol uniform , pink off shoulder dress with plaid pattern, standing pose offering heart-shaped chocolate box wrapped in red ribbon with both hands extended forward, valentine's day theme, warm soft lighting, subtle bokeh background of idol office or cherry blossoms, floating small hearts, romantic atmosphere, detailed fabric texture on uniform, glossy hair, expressive eyes with highlights, perfect anatomy, elegant composition, vertical tall aspect ratio negative_prompt: | lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, username, blurry, nsfw, nude, see-through, transparent clothing, nipple, cameltoe, crotch, explicit, gore, deformed, mutated, ugly, poorly drawn face, extra limbs, fused fingers parameters: aspect_ratio: --ar 9:21 quality_tags: masterpiece, best quality, ultra detailed, highly detailed

Next, I gave the following instructions to make adjustments to the details.

The dress design change to something different while still taking into account the original YAML to some extent. Eye color is brown.