A full character turnaround sheet of an ancient moon-palace sentinel, ethereal celestial guardian with armor of crystallized moonlight and flowing silver羽毛wings, luminous pale skin glowing with soft lunar veins, clutching a massive crescent spear of enchanted meteorite iron and moonstone, dozens of orbiting starlight fragments swirling around like living constellation companions, dramatic moonrise backlighting creating silver-blue halo against deep cosmic indigo sky, deep midnight blue silver white pale lavender and celestial gold color palette, Painterly digital art style, concept art for video game, front and back view with cosmic weapon details