She is a beautiful white alicorn mare, her majestic mane and tail streaming behind her. Her eyes are marked with striking blue accents, and a sun with an eight-pointed star adorns her flank as the symbol of her royal role as the ruler of Equestria and the mentor of Twilight Sparkle. For this fantasy-inspired picture, I recommend opting for bright, radiant colors. Start with a gleaming white base for the mare, and then add hints of pastel pink, light blues, and lavender for the mane and tail. A hint of pale yellow for the sun in her cutie mark and dark blue for her eye marking will enhance the image's dream-like quality. Combined, these colors will bring out the gentle yet powerful vibes of this mare.