Minimalist Single-Line Avatar Illustration AI Image Prompt

Transform the input image into a minimalist single-line illustration suitable for social media avatars, default aspect ratio 1:1. The subject can be a person, cat, dog, other animals, or plants. Based on the input subject type, automatically extract the most recognizable outer contours and key features, and summarize them into an artistic, minimalist single-line avatar/image illustration. The overall goal is not mechanical outlining, but retaining the subject's charm and recognizability, reconstructing it with higher elegance and spirit through single lines. [Subject Processing Logic] If subject is a person: retain key contours such as face shape, forehead, bridge of nose, mouth transitions, chin, ears, hairstyle, keeping only necessary facial features to avoid cluttered details. If subject is an animal: retain head shape, ears, muzzle contours, eye expressions, and main flow of fur, avoiding complex details. If subject is a plant: retain the most recognizable morphological features of flowers, leaves, branches, or fruits, summarizing their posture and rhythm with simple lines. [Line Style Requirements] Lines must be smooth, rounded, stretched, bold, and natural, as continuous as possible, with a sense of breath and improvisation. Use soft arcs mainly, avoiding sharp, stiff, or rigid lines. Do not draw as a rigid logo-style outline. Lines should be simple but vital, with a touch of casual artistic flair, looking relaxed and collectible. [Composition and Avatar Adaptation] 1:1 square design. Subject should be clear, concentrated, and prominent. Centered or slightly centered composition with clear visual focus and sufficient white space. [Background Logic] Do not fix the color to one type (not always blue). Select dark-toned background based on image temperament. Avoid neon or cheap bright colors. [Line Color Logic] Use thin white lines or light-colored lines contrasting with background. [Embellishment Logic] Add small, random, colorful dots, arcs, stars, or geometric symbols to enhance spirit and fun. Keep them sparse and natural. [Overall Goal] Minimalist, light, modern, and artistic. Suitable for social media: eye-catching, recognizable, and fun. [Avoid] Realism, shadows, textures, complex scenes, mechanical outlining. Ratio 16:9