A beautifully detailed portrait of a devout Sister of Battle woman stands in front of a vibrant stained glass window, set in a dynamic action scene. She has a symmetrical face, reflective eyes, and dark eyebrows, enhanced with makeup. Her sci-fi nun armor is depicted in the iconic Warhammer 40k style. The background features marble walls and floating dust particles, illuminated by dramatic, chiaroscuro lighting with rim highlights. The perspective is from above, capturing a majestic impressionist style painting influenced by artists like Waterhouse, John Constable, and a hint of Studio Ghibli's elegance. The work conveys a high level of detail and intricacy, making it a trending piece on platforms like ArtStation and CGSociety.