Create an easy Halloween coloring line-art illustration for young children featuring scene: Haunted House on the Hill. Treat the scene description as a literal visual requirement. Every specific character, object, setting, or activity named in Haunted House on the Hill must be clearly visible and easy to recognize. These scene-defining elements are the main focal points of the illustration and should be shown prominently. Use a small cast of 4 to 5 friendly Halloween characters total, selected from ghosts, vampires, witches, mummies, zombies, werewolves, Frankenstein-style monsters, skeletons, and other classic Halloween creatures. Use each character type at most once. Choose only the characters that naturally fit the activity rather than trying to include every monster type. If a witch appears, she may occasionally ride or fly on a broom, or she may participate on the ground like the other characters. The haunted house or spooky castle is the star of every scene: make the building large and prominent with a few friendly-spooky features such as a crooked roof, towers, arched windows, shutters, or a single cobweb, and keep every window and door a plain bright-white shape that is easy to color. Keep the architecture simple, with a few big clearly outlined shapes rather than many small details. Carved pumpkins are optional; when present, depict one or two total, kept small and secondary. For the scene "Spooky Castle Drawbridge Crossing," show the lowered drawbridge with its chains over a simple moat, with characters walking across it. For the scene "Ghosts Cleaning the Haunted House," show characters sweeping and dusting with brooms and feather dusters. For the scene "Castle Halloween Feast in the Great Hall," show a long table with a few large, simple food items. Keep the scene simple, spacious, and easy for young children to color, using only a few large, clearly separated elements, broad open coloring areas, generous white space, and minimal detail. Present the line artwork itself directly as the image: a flat, straight-on digital illustration filling the canvas, with the canvas edges themselves forming the outer limits of the artwork. Use only black outlines on a pure white background, and keep every enclosed shape completely unfilled with a bright white interior. Every visible element, including lights, windows, pumpkins, ghosts, decorations, trees, shrubs, bushes, bats, and hair, is rendered as crisp black outline line art with bright white interiors, so the entire illustration reads as a pure black-and-white line-art image. Create a true edge-to-edge composition: a few large scene elements may naturally continue beyond and be cropped by the four canvas edges, while the main characters and main activity remain clearly visible within the canvas, leaving the canvas edges visually open rather than enclosed. Keep all potentially writable surfaces plain and unmarked; communicate everything entirely through characters, objects, poses, and actions. The finished artwork contains only pictorial black linework and white coloring space.