纯粹好奇，最短的提示词到底能出什么样。只写了可爱女孩加几个质量词，结果居然不难看，但问题也很明显：每次结果差异大得离谱，光位、镜头、背景全靠运气，想复现同一种感觉基本没戏。于是把可控的东西一样样补进去，光从哪来、什么焦段、背景什么状态，出图立刻稳定多了，风格反而没被写死。
Portrait of a cute young woman, waist-up, facing camera with a small natural smile. Soft directional daylight from a large window at 45 degrees, gentle falloff across her cheek, subtle catchlight in both eyes. Clean skin texture with visible pores, fine flyaway hairs backlit at the crown. Simple knit sweater in a muted tone, plain out-of-focus interior background. 85mm lens look, shallow depth of field, round soft bokeh. Vivid but natural color, warm midtones, no heavy retouching. High detail, sharp focus on the eyes.
少写几个空泛的质量词，多写一句光从哪边来，收益大得多。