Line-art colouring page that prints clean

Create a black-and-white colouring page for {{age group}}. Scene: {{describe it — one main subject plus two or three supporting elements}}.

Hard requirements: pure black outlines on pure white, no greys, no shading, no hatching, no fills. Line weight even and thick enough to survive a home printer — heavier on the outer silhouette, lighter on interior detail. Every shape fully closed so colour cannot leak.

Detail level: {{simple with big open areas for age 4-6 / medium detail for 7-10 / dense pattern work for adults}}.

Layout: portrait A4 with a 15mm clear margin on all sides. Subject fully inside the frame, nothing cropped by the edge. No text, no title, no border decoration, no signature.

Give me the same scene at two detail levels so I can print one for each age.