A full-body portrait of a devout Sister of Battle in an action scene, standing confidently in front of a stained glass window. She has a symmetrical face with reflective eyes, dark eyebrows, and carefully applied makeup. Her sci-fi nun armor is intricately detailed and reflects the Warhammer 40k style. The setting features marble walls with dust particles dancing in the air, illuminated by dramatic chiaroscuro and rim lighting. The composition is inspired by the majestic impressionism of Waterhouse, John Constable, and the stylings of Atey Ghailan and Jeremy Mann. This piece, trending on ArtStation and CGSociety, showcases high detail and dramatic flair, with influences from Studio Ghibli and Greg Manchess. The painting captures the essence of fantasy and sci-fi with a touch of elegance and strength, avoiding any elements of distortion or low quality.