Graffiti Sketch Style Template

Prompt

Express 【{argument name="主体" default="主题/主体"}】 in a doodle sketch style, with the overall look conveying rapid outlining, freeform distortion, impromptu hand-drawing, and a draft-like visual effect. The lines should feel casual, exaggerated, and varied in thickness, appearing slightly messy but rhythmic and expressive, emphasizing abstraction, exaggeration, playfulness, and spontaneity rather than strict realism or detailed rendering.  Use rough, dry-brush-like flat color areas, allowing uneven brush marks, brush strokes, dry gaps, and layered coverage to remain visible. The colors should automatically adapt to 【{argument name="主体" default="主题/主体"}】, while the overall expression remains doodle-like, sketch-like, and abstract. Do not use transparent watercolor blending, delicate watercolor transitions, paper texture, soft misty effects, or dreamlike textures.  The background should mainly be left blank, keeping it simple, relaxed, unfinished, and design-oriented. A small amount of supporting symbols, arrows, marks, circles, repeated lines, casual handwritten text, or other doodle elements may be added to enhance the sketchbook or note-like visual language, but it must not become too crowded or damage the sense of the subject and negative space.  The content of the image does not need to be specified in advance. It should be automatically inferred and generated from 【{argument name="主体" default="主题/主体"}】 to create the most suitable subject form, action, related elements, symbols, or simplified scene, while maintaining a unified doodle sketch style and an exaggerated, abstract expression. Avoid complex realistic backgrounds and excessive detailing. A dedicated signature “voxcat” must be naturally included in the image as part of the composition. Its position should be discreet but clear, and it may be placed in the lower left corner, lower right corner, or near the title. The style should be consistent with the overall layout, like an artist’s signature or a design mark; the signature lettering should be refined, restrained, and premium, not too large, not disruptive to the composition, and not abrupt or cheap-looking.