The majestic blue pony Princess Luna stands proudly atop a golden platform, her long mane and tail cascading around her. She wears a beautiful golden tiara set with a stunning blue gem in the center and a blue cape with a golden lining. The white crescent moon on her forehead captivates all who behold her. Two blue moons in the night sky complete the perfect backdrop to this royal scene.
To best complete this picture, I would use a dark blue for Princess Luna, bringing prominence to her captivating figure. Use a lighter shade of blue for her cape and a opalescent white to highlight the crescent moon on her forehead. The gold platform, tiara, and moons should be given a gold shade, adding an ethereal glow to the scene. And lastly, use vibrant shades of blue, pale blue and even purples to finish the mane and tail of Princess Luna, creating an unforgettable picture!