anime, realistic, masterpiece, best quality, an astronaut riding a horse, smile, looking at viewer, official art, beautiful symmetric face, beautiful eyes, alone, solo, 8k, professional illustration

(photograph:0), (realistic:0), nsfw, worst quality, low quality, medium quality, deleted, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digits, fewer digits, cropped, jpeg artifacts, signature, watermark, username, blurry, simple background, ugly face, asymmetric face, ugly eyes, blushing, (((photorealistic))), pixiv, amateur