Cool-Toned Snowy Close-Up Portrait of a Woman

Create a photographic-grade, realistic winter head-and-shoulders portrait of a woman, 3:4 vertical format, front-facing composition, fully showing the entire head, top of the head, and hair on both sides.
【Appearance】
An East Asian young woman in her early twenties, with a clean, natural look and a quiet, cool, slightly childlike temperament.
Her face is a soft, rounded oval, relatively short in the face, with cheekbones that are not prominent, full cheeks that are not puffy, a soft jawline, and a small, rounded chin. It is not a sharp melon-seed face.
Her forehead is naturally full, with a soft hairline. Her eyebrows are natural black, flat in shape, with loose brow heads, a very light arch, and long tapered tails, with individual brow hairs visible.
Her eyes are deep brown, nearly black, almond-shaped, with a rounded eye shape, natural inner corners, and gently sloping outer corners. The double eyelid crease is shallow. The eye spacing is moderate, the irises are clear, and the eyes show soft reflections from the overcast snowy scene. Her gaze is directed straight at the lens, calm and gentle, with a slightly moist quality. Her lashes are natural; she is not wearing colored contacts, and there is no exaggerated eyeliner.
Her nose is small, with a slender bridge that has a soft undulation, a rounded tip, and narrow, natural nostril wings. A very small light-brown mole sits on the lower part of the bridge, above the tip of the nose.
Her lips are a natural soft rose-pink. The upper lip is slightly thin, the lower lip is soft and full, the cupid's bow is gentle, and fine lip lines are visible. Her lips are gently closed, with the corners lifted slightly, showing a very restrained faint smile without teeth.
Her skin is fair, with real pores, fine vellus hair, and a few faint freckles. Both cheeks have a soft pink flush from the cold, the tip of her nose is slightly red from the cold, and her ears are faintly red. Skin tone variation is natural, with the genuine texture of winter outdoors. No heavy makeup, no skin smoothing.
【Hairstyle】
Natural black straight hair, with a slightly offset middle part. The hair is loosely swept back and tied low at the back.
There is natural volume on the top of the head, with a clear parting and roots, and normal crown proportions. Both ears are partly exposed. Several long, fine loose strands fall in front of the ears and along both sides of the cheeks, with a few strands gently blown open by a light breeze.
The full top of the head, hairline, both sides of the hair, and the outermost fine flyaway strands are all visible. A few tiny snowflakes rest on the hair. No hat, no hair accessories, and no jewelry.
【Clothing】
A thick, black, coarse-knit wool scarf wraps around the neck. It is wide, soft, and has weight, layered several times at the neck and wrapped up to just below the jaw, covering most of the neck.
The thick yarn, knit texture, and fine fibers of the scarf are clearly visible. The shoulders wear a deep black winter coat, forming a similar but layered dark area with the scarf.
A few small snowflakes are scattered on the scarf and shoulders, with no large patches of snow.
【Composition】
A single person, close-up, front-facing head and shoulders. The subject is centered, the shoulders are naturally relaxed, the head is upright, and the gaze is directed straight at the lens.
The full head occupies about two-thirds of the frame height. The thick scarf and part of the shoulders remain at the bottom of the frame. Leave about 8% background space above the highest strands of hair, and keep margin between the hair on both sides and the frame edges.
Use a natural 85mm portrait lens perspective, avoiding wide-angle distortion that enlarges the nose or deforms the face. Both eyes sit in the same sharp focal plane; the face and main hair are sharp, and the background is softly blurred.
【Environment】
Winter outdoors. The background shows distant snow-covered trees and ground, softened into soft gray-blue, pale gray, and cool white color blocks, with no recognizable people, buildings, text, or clutter.
There are a few fine, sparse, light snowflakes in the air that do not block the eyes or facial features.
【Light and Color】
Natural diffused light from an overcast snowy day, soft and even, with no strong direct sunlight and no obvious hard shadows.
Overall, a low-saturation, cool blue-gray palette. The black hair and scarf retain rich shadow detail. The face is clearly exposed, and the fair skin keeps the faint pink of the cheeks and nose tip, creating a delicate contrast with the cool snowy scene.
The image feels quiet, cool, and intimate, with the texture of a winter film still. It is natural photography, not staged, with no exaggerated commercial beautification.
【Details and Output】
Realistic human proportions, clear individual hair strands, fine eyebrow hairs, natural eye reflections, real skin pores, tiny freckles, delicate lip lines, and wool knit fibers.
Details are clear but not over-sharpened; the skin is soft but not smoothed. Maintain moderate depth of field and avoid an overly complex background.
Generate a single standalone portrait, not a collage or comparison image. Use the highest available native resolution, prioritizing 3072×4096 pixels or a high-resolution output of equivalent proportions.
【Negative Constraints】
Do not crop the top of the head, do not create an abnormally tall skull, do not elongate the head, and do not give the face a pointed chin, exaggerated large eyes, an overly narrow nose bridge, overly thick lips, an internet-celebrity look, heavy makeup, colored contacts, false lashes, obvious lipstick, or excessive symmetry.
No plastic skin, mechanically repeated pores, excessive smoothing, oil-painting look, anime feel, 3D rendering look, wig-like hair texture, white sharpening halos, or skin-smudging effects.
No exaggerated smile, no visible teeth, no tears, and do not add a hat, earrings, a necklace, bright clothing, or other people.
No subtitles, text, logos, watermarks, play buttons, interface elements, or picture frames.

生成一张摄影级写实的冬日女性头肩人像，3:4竖版，正面构图，完整呈现整个头部、头顶和两侧发丝。
【人物外貌】
一位二十岁出头的东亚年轻女性，外貌清秀自然，带有安静、清冷而略显稚气的气质。
脸型是柔和的圆椭圆形，面部偏短，颧骨不突出，脸颊饱满但不浮肿，下颌线柔和，下巴小巧圆润，不是尖锐的瓜子脸。
额头自然饱满，发际线柔和。眉毛是自然黑色平眉，眉头略散，眉峰很轻，眉尾细长，能看见独立眉丝。
眼睛为深棕近黑色，杏仁形，眼型偏圆润，内眼角自然，眼尾平缓，双眼皮褶皱较浅。眼距适中，虹膜清晰，眼中有阴天雪景形成的柔和反光。眼神直接看向镜头，平静、温柔，带一点湿润感。睫毛自然，不戴美瞳，没有夸张眼线。
鼻子小巧，鼻梁纤细、起伏柔和，鼻尖圆润，鼻翼窄而自然。鼻梁下段、鼻尖上方有一颗很小的浅棕色痣点。
嘴唇为自然的淡玫瑰粉色，上唇略薄，下唇柔软饱满，唇峰柔和，唇纹细腻可见。嘴唇轻轻闭合，嘴角微微上扬，呈现非常克制的浅笑，不露牙。
皮肤白皙，带有真实毛孔、细微绒毛和少量浅淡雀斑。两侧脸颊因为低温泛起柔和的粉红，鼻尖冻得略红，耳朵也微微泛红。肤色变化自然，有真实冬日户外的生理质感，没有浓妆，没有磨皮。
【发型】
自然黑色直发，中分略微偏移，头发松松地向后收拢，后方低低扎起。
头顶有自然的蓬松体积，分缝和发根清晰，颅顶比例正常。两侧耳朵部分露出，耳前和面颊两侧垂下几缕细长碎发，少量发丝被微风轻轻吹开。
完整呈现头顶、发际线、两侧头发和最外围的细碎发丝。发丝上落着少量细小雪粒。不戴帽子，不戴发饰，不佩戴首饰。
【服装】
脖子围着一条厚实的黑色粗针织羊毛围巾，宽大、柔软、有重量感，在颈部堆叠数层，包裹到下颌下方，遮住大部分脖子。
围巾能清晰看见粗毛线、针织纹理和细微纤维。肩膀穿着深黑色冬季外套，与围巾形成相近但有层次的深色区域。
围巾和肩部散落少量细碎雪花，不要大块积雪。
【构图】
单人正面头肩近景，人物居中，双肩自然放松，头部保持端正，目光直视镜头。
完整头部约占画面高度的三分之二，画面下方保留厚围巾及部分肩膀。最高处发丝上方留出约8%的背景空间，两侧头发与画面边缘之间也保留余量。
使用自然的85mm人像镜头透视，避免广角造成鼻子放大、脸部变形。双眼处于同一清晰焦平面，面部和主要发丝清晰，背景柔和虚化。
【环境】
冬季户外，背景是被白雪覆盖的远处树木与地面，虚化为柔软的灰蓝、浅灰和冷白色块，没有可辨认的人物、建筑、文字或杂物。
空气中有少量细小飘雪，稀疏、轻盈，不遮挡眼睛和五官。
【光线与色彩】
阴天雪地的自然散射光，柔和、均匀，没有强烈直射阳光，没有明显硬阴影。
整体采用低饱和的冷蓝灰色调，黑色头发和围巾保持丰富暗部层次。面部曝光清楚，白皙皮肤中保留脸颊和鼻尖的淡粉红，与冷色雪景形成细腻对比。
画面安静、清冷、亲近，有冬日电影静帧的质感。自然摄影，不刻意摆拍，不使用夸张商业美颜。
【细节与输出】
真实自然的人体比例，清晰的独立发丝、细小眉丝、自然眼部反光、真实皮肤毛孔、微小雀斑、细腻唇纹和羊毛针织纤维。
细节清晰但不过度锐化，肤质柔软但不磨皮。保持适度景深，避免背景过度复杂。
生成一张独立人像，不做拼图或对比图。使用最高可用原生分辨率，优先3072×4096像素或同等比例的高分辨率输出。
【负面约束】
不要裁切头顶，不要异常高颅顶，不要把头部拉长，不要尖下巴、夸张大眼、过窄鼻梁、过厚嘴唇、网红脸、浓妆、美瞳、假睫毛、明显口红、过度对称。
不要塑料皮肤、机械重复毛孔、过度磨皮、油画感、动漫感、3D渲染感、假发质感、锐化白边、皮肤涂抹感。
不要夸张笑容，不露牙，不流泪，不添加帽子、耳环、项链、鲜艳服装或其他人物。
不要字幕、文字、标志、水印、播放按钮、界面元素或画面边框。