Avatar retro pixel art para tamano portada facebook

Polished social-media avatar / profile picture, human portrait, retro pixel art, warm welcoming mood, monochrome palette, solid color. Centered composition, clean cropping for circular and square crops, high readability at small sizes. Magazine-grade rendering, sharp focus, no text overlays, no watermarks. No celebrity likenesses, no identifiable real people. Tasteful framing, no minors in sexualized context, no extremist symbols. Target search intent (rendered visually, no on-image text): "tamano portada facebook" (es).