A celestial guardian stands at the precipice of a boundless void, her raven hair cascading like a dark waterfall as it's refracted by an ethereal luminescence. Glass wings gleam with a stained glass-like sheen, illuminated constellations above harmonizing with her bioluminescent glow. Hands clasped in prayer, she appears suspended in the divine light, plucked from the heavens themselves. Framed against the void's dark expanse, the composition features bold lines, flat colors, and subtle shading evoking a vintage retro aesthetic reminiscent of Keith Negley, Mike Mignola, and Jon Klassen's styles.