[subject] 的手绘插画，细腻的铅笔或墨线，柔和的粉彩配色，低饱和色调，轻柔的明暗处理，平静梦幻的氛围，细微渐变，低对比度，带纹理的速写本纸张背景
Hand-drawn illustration of [subject], delicate pencil or ink lines, soft pastel color palette, muted tones, gentle shading, calm and dreamy atmosphere, subtle gradients, minimal contrast, textured sketchbook paper background
