Create an easy Halloween coloring line-art illustration for young children featuring scene: Baby Ghost Playing Peekaboo. Treat the scene description as a literal visual requirement. Every specific character, object, setting, or activity named in Baby Ghost Playing Peekaboo 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. This illustration is for toddlers, so feature only the one or two adorable baby-style Halloween characters named in the scene, drawn extra large so they fill most of the canvas. Give every character a chubby rounded body, an oversized head, big friendly eyes, and a happy smiling face. Nothing may look scary: no fangs, sharp teeth, claws, stitches, or frightening expressions anywhere in the scene. Keep any supporting props to one or two simple oversized objects that belong to the activity, and keep the background to just a couple of large simple shapes such as a hill, a cloud, or a moon. Carved pumpkins are optional; when present, give them small happy smiling faces. For the scene "Baby Ghost Playing Peekaboo," show the ghost peeking out from behind a large simple object with its hands visible. For the scene "Baby Bat Hanging Upside Down on a Branch," make the smiling upside-down pose clear on a single thick branch. For the scene "Sleepy Skeleton with a Teddy Bear at Bedtime," show the skeleton tucked under a simple blanket hugging the teddy bear. 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.