🏗️ 第二章：Prompt 标准结构
2.1 完整 Prompt 的 7 大要素
[主体描述] + [动作/姿态] + [环境场景] + [光线氛围] + [画面风格] + [视角构图] + [质量控制]
① 主体描述（Subject）
画面的核心内容，要清晰、具体、详细。
# 基础描述
a girl
# 详细描述 ✓
a young woman with long blonde hair and blue eyes, wearing a white dress
② 动作/姿态（Action/Pose）
主体在做什么，什么表情和姿势。
sitting, standing, running, smiling, looking at camera,
hands on hips, dancing, jumping, meditating
③ 环境场景（Environment）
背景、地点、周围事物。
in a flower garden, on the beach, in a modern office,
outdoor forest, urban street, mountain landscape
④ 光线氛围（Lighting & Mood）
光线类型和整体氛围，对最终效果影响巨大。
soft morning light, golden hour, neon lighting, dramatic lighting,
studio lighting, natural light, cinematic lighting, backlit
⑤ 画面风格（Style）
艺术风格、创作媒介、视觉特征。
photorealistic, anime style, oil painting, watercolor,
cyberpunk, minimalist, vintage, cartoon, 3D render
⑥ 视角构图（Composition）
镜头角度、画面比例、构图方式。
close-up portrait, full body shot, wide angle, bird's eye view,
low angle, centered composition, rule of thirds
⑦ 质量控制（Quality Tags）
提升生成质量的关键词。
highly detailed, 4k, 8k resolution, ultra realistic,
professional photography, masterpiece, high quality,
sharp focus, intricate details
🎯 完整示例：商业摄影风格
A young asian woman (主体)
wearing elegant white blazer (细节),
confident smile, arms crossed (姿态),
in a modern minimalist office (环境),
soft natural window light from left side (光线),
professional corporate photography style (风格),
medium shot, centered composition (构图),
highly detailed, 4k, sharp focus (质量)
🚀 第四章：高级写作技巧
4.1 权重控制技巧
某些模型支持用括号和数字控制关键词权重：
# 增加权重（重要元素）
(blue eyes:1.3), ((beautiful face:1.5))
# 降低权重（减弱元素）
[background:0.8]
4.2 负面提示词（Negative Prompts）
告诉 AI 你不想要什么（部分模型支持）：
Negative: blurry, low quality, distorted, ugly,
bad anatomy, watermark, text, logo
4.3 参考艺术家风格
引用知名艺术家或摄影师的风格：
in the style of Hayao Miyazaki
in the style of Annie Leibovitz photography
Greg Rutkowski style digital art
版权提醒：商业使用时避免直接使用在世艺术家的名字，可能涉及版权问题。可以用风格描述词替代，如 "impressionist style" 而非 "Van Gogh style"。
4.4 色彩控制技巧
# 色调控制
warm color palette, cool tones, pastel colors,
monochrome, black and white, vibrant colors,
muted colors, neon colors
# 具体颜色
blue and gold color scheme,
predominantly red with white accents
4.5 情绪与氛围
# 情绪氛围
peaceful, serene, dramatic, mysterious,
cheerful, melancholic, energetic, calm,
romantic, epic, cozy, haunting
4.6 技术参数（特定模型）
# Midjourney 参数示例
--ar 16:9 (宽高比)
--q 2 (质量)
--style raw (风格)
# Stable Diffusion 采样步数
Steps: 50, Sampler: DPM++ 2M Karras
BigBanana 提示：在 BigBanana 使用 Gemini 模型时，专注于文字描述即可，技术参数由系统自动优化。使用"AI 优化"功能可自动提升 Prompt 质量。
📸 第五章：实战案例库
5.1 人像摄影案例
案例 1：专业商务头像
Professional portrait of a young asian businessman in his 30s,
slight confident smile, wearing dark navy suit and white shirt,
clean studio background, soft natural lighting from window,
sharp facial details, realistic skin texture,
medium shot, centered composition,
professional corporate photography, 4k, highly detailed
适用场景：LinkedIn 头像、公司官网、简历照片
核心技巧：强调"professional"、"corporate"等商务关键词，使用"soft natural lighting"营造亲和力
案例 2：二次元角色头像
Cute anime girl portrait, 18 years old,
big sparkling blue eyes, long flowing pink hair with twin tails,
gentle smile with slight blush, wearing school uniform,
cherry blossom petals floating in background,
soft pastel color palette, warm lighting,
upper body shot, slightly tilted head,
highly detailed anime illustration, 4k, kawaii style
适用场景：社交头像、游戏角色、个人 IP
核心技巧：使用"anime"、"kawaii"等风格词，详细描述五官和发型
5.2 电商产品图案例
案例 3：护肤品主图
Clean e-commerce product shot of luxury skincare serum bottle,
elegant glass bottle with gold cap, product centered on pedestal,
soft pastel pink background, minimal composition,
fresh green leaves and water droplets as decoration,
soft studio lighting with subtle shadows,
high-end premium feel, sharp product focus,
commercial product photography, 4k, ultra detailed
适用场景：淘宝/天猫主图、小红书种草图
核心技巧："product centered"确保主体突出，"minimal composition"保持简洁
案例 4：咖啡包装主图
Minimalist e-commerce hero shot of premium coffee beans bag,
matte black packaging with gold logo, product standing upright,
warm beige background, coffee beans scattered around,
soft side lighting creating depth, clean shadows,
sophisticated and elegant feel,
professional product photography, 4k, sharp focus,
high contrast, commercial advertising style
适用场景：食品电商、品牌宣传
核心技巧：强调"premium"、"sophisticated"营造高端感
5.3 场景插画案例
案例 5：赛博朋克城市
Ultra detailed cyberpunk night city street scene,
towering neon-lit skyscrapers with holographic advertisements,
rainy streets with reflective puddles, wet asphalt,
people with umbrellas walking, futuristic cars passing by,
dense neon signs in blue, pink and purple,
misty atmosphere with light rays piercing through fog,
wide cinematic angle, deep perspective,
highly detailed digital art, 4k, cinematic lighting,
blade runner aesthetic
适用场景：壁纸、游戏场景、概念设计
核心技巧：详细描述光线和氛围，"blade runner aesthetic"一词即可定义风格
案例 6：梦幻森林
Magical fantasy forest at twilight,
ancient trees with glowing bioluminescent plants,
soft blue and teal color palette, mystical atmosphere,
light particles floating in the air like fireflies,
gentle mist covering the ground,
stone path winding through the forest,
ethereal and peaceful mood,
depth of field with bokeh effect,
highly detailed digital painting, 4k, dreamy lighting
适用场景：壁纸、插画、游戏背景
核心技巧：使用"bioluminescent"、"ethereal"等魔幻元素词
5.4 社交媒体内容案例
案例 7：小红书风格美食图
Overhead flat lay food photography of healthy breakfast,
beautifully arranged avocado toast, fresh berries, coffee,
white marble table background, natural morning light,
soft shadows, minimalist composition,
fresh flowers as decoration, pastel color palette,
Instagram-worthy aesthetic, lifestyle photography,
4k, highly detailed, professional food styling
适用场景：小红书、Instagram、美食博客
核心技巧："flat lay"平铺拍摄、"Instagram-worthy"网红风格
5.5 常见错误与改进对照
| ❌ 错误示例 |
✅ 改进示例 |
| a girl |
young woman with long brown hair, blue eyes, wearing casual dress |
| beautiful landscape |
mountain landscape at golden hour, snow-capped peaks, alpine meadow |
| cool cyberpunk stuff |
cyberpunk city street, neon signs, rainy night, futuristic atmosphere |
快速提升技巧：
- 用具体名词替代形容词（"oak tree" 而非 "beautiful tree"）
- 添加数量词（"three cats" 而非 "some cats"）
- 指定时间（"at sunset"、"in the morning"）
- 使用专业术语（"bokeh effect"、"depth of field"）