345Cozy Room Coloring Book — A Reading Nook

Directly generate one completed black-and-white coloring page image now. Return only one flat printable page, without explanations, questions, code or colored examples.
Output size 2480x3508 pixels, A4 portrait, 300dpi, print-ready poster.
If the ratio is empty, use portrait A4 (210:297). Keep the entire scene and every object inside the paper with 10–12mm blank white margins on all sides. For another selected ratio, rearrange the same scene within that ratio without cropping.

Main animal: 【Main animal】
Room theme: 【Room theme】
Animal pose: 【Animal pose】
Main furniture: 【Main furniture】
Key props: 【Key props】

An empty Main animal selection means Cat. Draw only the selected species; changing the animal keeps the scene and line-art style. The Main animal selection overrides any different species mentioned in the pose, activity or theme. With None (props only, no people), omit all people, animals and animal-face decorations, using only props, furniture and plants. Ignore pose and activity in this case and fill their space with suitable objects. All subsequent animal placement, activity and appearance instructions apply only when an animal is selected. For other empty optional fields, choose values that suit the theme.

View one small room corner where two walls meet, slightly from above. Show the complete animal on a cushion at the bottom. Clearly show the three furniture pieces and the supplied props. Connect 14–18 household objects on one floor: window, curtains, books, lamp, plants, cups, boxes and rug. The complete miniature-room scene occupies 85–90% of the paper width. Simplify the outside view to large clouds and hills. Use broad furniture areas, book spines, large curtain folds, broad floorboards, pots and large leaves. Target about 10 areas for animal and cushion, 30 for furniture, 35 for books and props, 25 for window/curtains/lamp, 25 for plants and 20 for floor/rug/walls. A rug has only two or three wide bands; baskets are smooth.

Aim for approximately 120–250 closed white coloring areas and 1–2 hours of coloring for a middle-school student. Except for the dense doodle, preferably target 140–180 areas. This counts coloring areas, not objects. Most areas are at least 6–15mm wide at A4; the smallest intended decorative areas are at least 4mm. The wider-area instructions for the prop collections take priority. Never add tiny repetitive patterns to reach the count. Merge narrow bands, wedges and tiny holes into neighboring areas or open them to the background.

Animals are original rounded characters with clear species-specific ears, bodies and tails. Cats have triangular ears and long tails; dogs have floppy ears; rabbits long ears and short tails; otters small round ears, long bodies and thick tails; hamsters small round ears, plump cheeks and short tails; bears round ears and broad muzzles. Eyes and mouths use short open curves; faces remain broad white areas. No tiny closed noses, dot pupils or fine fur texture. Keep bodies, paws and tails separate from objects.

Use only smooth black continuous lines on white. At A4, outer lines are about 0.5–0.7mm and inner lines about 0.35–0.5mm. Close every coloring contour. No black fills, color, gray shading, hatching, grids, checks, fine decorations, texture, shadows, mandalas, letters, numbers, titles, brands, existing characters, signatures, watermarks, book mockups or multiple panels. Do not render the input sentences as text.

[Final output format]
Output size 2480x3508 pixels, A4 portrait, 300dpi, print-ready poster.
This selected output format takes priority over any fixed canvas size or aspect ratio elsewhere in this template. Adapt the composition, text zones and margins to the selected canvas without stretching or cropping essential content. Device safe areas apply only when a device is selected. Never print these format instructions on the image.