Create a professional A4 portrait printable coloring book page. Scene: A peaceful little bunny sleeping comfortably under a large old tree in a beautiful enchanted forest. Surround the bunny with detailed wildflowers, mushrooms, leafy plants, tiny butterflies, hanging vines, small stones, and a little wooden lantern. Add a few soft clouds and decorative leaves in the background. Style: beautiful intricate black-and-white coloring book line art, clean smooth bold outlines, charming cozy hand-drawn illustration, detailed natural elements, balanced composition, suitable for both older children and adults. Include many interesting but clearly enclosed areas that are easy to color. Requirements: pure white background, black outlines only, no color, no gray shading, no gradients, no shadows, no solid black filled areas, no text, no letters, no watermark, no logo. Crisp sharp high-resolution line art, print-ready, A4 portrait composition, generous clean margins, nothing cropped.