A striking full-body portrait of a devout Sister of Battle, poised in an action scene, her presence illuminated by a striking stained glass window. Her face is meticulously detailed and symmetrical, with reflective eyes, dark eyebrows, subtle mascara, and elegant makeup. She is donned in futuristic, sci-fi inspired nun armor, reminiscent of Warhammer 40k aesthetics. The backdrop features grand marble walls, with dust particles dancing in the air, highlighted by intricate and dramatic chiaroscuro lighting, employing rim light to accentuate her form. The composition is viewed from above, capturing a majestic and professional impressionist style reminiscent of artists like Waterhouse, Constable, and Jeremy Mann. The artistic rendering bears high details and dramatism, akin to the works of Studio Ghibli or Makoto Shinkai, reflecting a trending aesthetic on platforms like ArtStation and CGSociety. The armor fuses elements of medieval and steel designs, rich in texture and depth. The overall scene conveys a sense of epic scale and inspiration, while avoiding any anatomical distortions or visual anomalies such as extra limbs or poor framing.