A hand-drawn children's marker illustration on a horizontal white paper, centered around the main subject from the input image. Extract the subject's outer silhouette, pose direction, distinctive parts, functional elements, and identity colors, simplifying complex details into a few clear large shapes. The subject is not realistically proportioned or precisely structured, but defined by thick black hand-drawn outlines, loose internal lines, and childlike but recognizable distortions. The visual weight is placed in the center or lower middle, with wide clean white margins, making the subject appear as a protagonist symbol carefully drawn by a child. Use a limited palette of high-saturation marker blocks: a strong main color derived from the subject's identity for mass, a secondary strong color to divide structure and movement, and small bright accents for key identifying parts. Black outlines define the shape, while white paper serves as background, highlights, and gaps. All color blocks show rough handcrafted marks, including dry brush strokes, unfilled gaps, slight overshoots, color overlaps, and line-color misalignments. Avoid realistic lighting, smooth gradients, or polished textures. Keep the background as a white paper action field, without a full environment. Only place sparse hand-drawn red, blue, and black speed lines, wavy lines, lightning-like dashes, cloud shapes, short vertical lines, or exclamation marks around the subject's movement direction, gaze, and emotional pressure, to suggest air, sound, speed, and information. Convert complex textures, patterns, and small decorations from the input into short lines, blocks, gaps, and childlike memory symbols. Draw key identity parts clearly, while keeping non-essential parts simple, skewed, and asymmetrical. If text is needed, use only short handwritten onomatopoeia, exclamations, or marginal notes, with rough marker strokes like action lines, without formal layout. The overall finish should be clear but unrefined, resembling a real paper drawing with thick black markers and high-saturation colored markers, showing childlike action, with tremors, gaps, overdrawing, and innocent inaccuracies from a child's hand control. The result should instantly recognize the input subject while retaining the charm of a child's drawing.
