1girl, back shot, looking back, on all fours, serious, spikes, wearing a gray rock armor, medium breasts, spiky short hair, gray hair, brown eyes, rough rocky terrain, masterpiece quality, ultra HD, 4K, best quality,

photo, deformed, black and white, realism, disfigured, low contrast, lowres, (bad), text, error, fewer, extra, missing, worst quality, jpeg artifacts, low quality, watermark, unfinished, displeasing, oldest, early, chromatic aberration, signature, extra digits, artistic error, username, scan, [abstract], duplicates, tight