A full shot of a stunning woman in sci-fi nun armor, resembling a sister of battle, confidently holding a bolt pistol in front of a magnificent stained glass window. Her tanned skin is complemented by a distinctive fleur de lys tattoo on her face and wax seals adorning her armor. Her symmetrical face is highlighted by reflective eyes, dark eyebrows, and expertly applied makeup including mascara, giving her a powerful presence. The scene is set against marble walls with dust particles visible in the dramatic chiaroscuro lighting, evoking the style of a professional impressionist oil painting with influences from Waterhouse, John Constable, and Studio Ghibli. This highly detailed artwork features intricate design elements, capturing the essence of Warhammer 40k with an impressionistic touch, and is trending on platforms like ArtStation and CGSociety.