Prompt
Paint the entire artwork as an eerie watercolor and ink Halloween illustration, emerald luminous washes, charcoal stone linework and pale jade highlights. A horizontal 16:9 view from an upper side gallery looks diagonally down into an abandoned vaulted crypt. Broken ribbed arches frame a shallow flooded central aisle, and a few unlettered tomb slabs sit along the walls. A green ectoplasmic ribbon swirls from the water up toward an open rose window at far right. Ghost faces emerge naturally within the smoke with two dark eye holes and one open mouth each. The green light reflects across the water and worn masonry. New elevated side viewpoint and flooded staging, not a frontal corridor. Five large smoke letters stretch across the middle left of the chamber and read exactly "GHOUL", G H O U L, once, with each letter distinct and its counters open. Ghost faces do not obscure letter shapes. No other words.