Doodle Sketch AI Builder

Depict 【a brilliant AI builder】 in a doodle-sketch style, with an overall look of rapid sketching, free deformation, improvised hand drawing, and a draft-like quality. Lines are casual, exaggerated, and may vary in thickness, slightly messy yet rhythmic and expressive, emphasizing summarization, exaggeration, playfulness, and spontaneity rather than rigorous realism or fine rendering.  Color is applied in rough blocks with a pronounced dry-brush feel, keeping uneven smears, brush marks, dry-brush gaps, and a sense of overpainting. The palette adapts automatically to the 【subject/theme】, but the overall expression stays doodle-like, sketch-like, and summarized. No transparent watercolor bleeding, no delicate watercolor gradients, no paper texture, no soft hazing, no dreamy quality.  The background is mostly negative space, keeping it simple, relaxed, unfinished, and design-conscious; a small number of supporting symbols, arrows, marks, circled notes, repeated lines, casually written words, or other doodle elements may be added to reinforce the sketchbook or notebook visual language, but it must not become crowded and must not spoil the subject or the airy negative space.  The content of the image does not need to be specified in advance; 【a brilliant AI builder】 automatically infers and generates the most fitting main figure, action, related elements, symbols, or simplified scene, while maintaining a unified doodle-sketch style and an exaggerated, summarized mode of expression, avoiding complex realistic backgrounds and over-elaboration. The signature "BlanPlan" must be naturally incorporated into the image as part of the artwork, placed discreetly but legibly, in the lower left corner, lower right corner, or near the title, with a style consistent with the overall layout, like an artist's signature or design mark; the signature typeface should be refined, restrained, and high-end, not too large, must not disrupt the main composition, and must not look abrupt or cheap.