竖版上下双拼复古水彩插画海报

Create a vertical "Upper-Lower Split" style poster, the canvas is strictly divided into upper and lower areas, the upper part is the original real photography, and the lower part is a retro watercolor hand-drawn editorial illustration translation of the same subject. The overall temperament is relaxed, playful, gentle, fashionable, retro, and with a small amount of humor.

Upper Part:
Place the original photo uploaded by the user. Use figures, pets, animals, or the relationship between figures and pets as the main subject of the picture, clearly presenting the subject's facial features, hairstyle, hair color, clothing, actions, postures, and overall atmosphere. The upper part maintains a real photographic style without illustration processing, and can be moderately cropped to enhance the focus on the subject. The background should be restrained as much as possible, with buildings and complex spaces only serving as a weakened environment, not as the main content.

Lower Part:
Extract the most recognizable subject, outline, posture, and narrative relationship from the photo in the upper part, and reconstruct it into a light, naive, and retro hand-drawn editorial illustration. Do not mechanically replicate details; re-express with summarized modeling, moderately exaggerated proportions, symbolic features, and humorous visual metaphors, while keeping the original object recognizable at a glance. Integrate modernist editorial illustration, Bauhaus graphic composition, children's picture books, naive art, and fashion sketch temperament. The shapes are concise, the outlines are slightly hesitant with manual errors, and local features can be moderately enlarged, giving the picture a sense of story, fashion, and playfulness.

The color scheme is extracted from the uploaded original photo, using a high-brightness, low-to-medium saturation soft limited color palette, unifying the atmosphere with analogous colors, and creating visual jumping points with small areas of complementary colors. Use a mixed texture of watercolor, gouache, colored pencils, pastels, and dry brushes, retaining paper grain, transparency, broken brushstrokes, rough edges, slight dirty colors, and old printing color registration deviations. The background uses a large area of white space, supporting the subject only with loose light colors, local diagonal lines, or simple geometric elements, avoiding complex scene accumulation, realistic lighting and shadow, smooth vectors, three-dimensional rendering, and over-refinement.

The text extracts a small amount of English keywords, titles, serial numbers, or suitable golden sentences from the location, character, scene, or theme of the photo, and continues the hand-drawn editorial language of the picture. The main title uses handwritten art fonts with a slight sense of naivety and retro, and the auxiliary text uses restrained and gentle sans-serif or serif fonts, which can be slightly misplaced, tilted, stretched, color-stacked, or produce old printing color registration shifts, making the text grow naturally in the picture like a part of the illustration, rather than a layout element pasted on later.

Overall, use off-white or light-colored backgrounds and a large amount of white space. Subject features, colors, postures, and visual symbols maintain unified echoes in the picture. The overall temperament is relaxed, playful, retro, gentle, smart, fashionable, humorous, romantic, and relaxed, with a slight clumsiness and quirky confidence, like a page of a carefully preserved old fashion picture book and modern art magazine.

The whole needs to clearly convey "the upper part is the original photo reference, and the lower part is the retro watercolor editorial illustration translation of the same subject," with both identity consistency and obvious style contrast between the two.

创作一张竖版“上下双拼”风格海报，画布严格划分为上下两个区域，上方为真实摄影原图，下方为同一主体的复古水彩手绘编辑插画转译。整体气质轻松、俏皮、温柔、时髦、复古且带少量幽默感。

上半部分：
放置用户上传的原始照片。以人物、宠物、动物，或人物与宠物之间的关系作为画面主体，清楚呈现主体的脸部特征、发型、毛色、服饰、动作、姿态和整体氛围。上半部分保留真实摄影风格，不做插画化处理，可适度裁切以增强主体聚焦。背景尽量克制，建筑和复杂空间只作为弱化环境，不作为主要内容。

下半部分：
从上半部分照片中提取最具识别性的主体、轮廓、姿态与叙事关系，重构为轻盈、稚拙、复古的手绘编辑插画。不要机械复刻细节，以概括造型、适度夸张比例、符号化特征和幽默视觉隐喻重新表达，同时保持原物一眼可辨。融合现代主义编辑插画、包豪斯平面构成、儿童绘本、稚拙艺术与时尚速写气质，形体简练，轮廓略带迟疑与手工误差，局部特征可适度放大，让画面兼具故事感、时尚感与俏皮感。

配色从上传的原图中提取，采用高明度、低至中等饱和度的柔和有限色盘，以近似色统一氛围，小面积互补色制造视觉跳点。使用水彩、水粉、彩铅、粉蜡笔与干刷混合质感，保留纸张颗粒、透底、笔触断裂、边缘毛糙、轻微脏色与旧印刷套色偏差。背景大面积留白，仅以松散淡彩、局部斜线或简单几何元素承托主体，避免复杂场景堆积、写实光影、光滑矢量、三维渲染和过度精修。

文字从照片的地点、人物、场景或主题中提炼少量英文关键词、标题、编号或适配金句，并延续画面的手绘编辑语言。主标题采用略带稚拙与复古感的手写艺术字，辅助文字使用克制温和的无衬线或衬线字体，可轻微错位、倾斜、拉伸、叠色或产生旧印刷套色偏移，让文字像插画的一部分自然生长在画面中，而不是后期贴上的排版元素。

整体使用米白或浅色背景与大量留白，主体特征、色彩、姿态与视觉符号在画面中保持统一呼应。整体气质轻松、俏皮、复古、温柔、聪明、时髦、幽默、浪漫、松弛，略带笨拙与古怪自信，像一页被精心保存的旧时尚绘本与现代艺术杂志。

整体需清晰传达“上半部分为原始照片参考，下半部分为同一主体的复古水彩编辑插画转译”，二者之间既有身份一致性，也有明显风格落差。