A magnificent friendly fantasy dragon breathing a large stream of fire from its mouth, designed specifically as a high-quality children's coloring book page. Full-body dragon, centered composition, facing slightly toward the viewer, powerful but friendly expression, large expressive eyes, two curved horns on its head, pointed ears, wide nostrils, strong jaw, large open mouth with clearly visible teeth and tongue. The dragon has a long muscular neck, broad chest, large detailed wings spread behind its body, each wing with clearly separated membrane sections and strong curved wing bones. Four powerful legs with large claws, clearly defined toes, and a long curved tail extending gracefully around the body. The tail ends in several decorative spikes. Cover the dragon's body with many clearly separated scales, organized in clean patterns. Add larger armor-like scales around the chest, shoulders, neck, legs and back. Add several decorative spikes along the dragon's spine and tail. The dragon is breathing a spectacular stream of fire from its open mouth. The flames should have a clear flowing shape with large outer flames and smaller flame tongues inside, all represented only by clean black outlines so children can color the flames themselves. Add a few small floating flame shapes around the main fire stream. Create a magical fantasy environment using simple outline elements: a rocky ground beneath the dragon, a few large stones, small plants, several distant mountain silhouettes, and a few simple clouds. Keep the background relatively open so the dragon remains the main focus. STYLE: professional children's coloring book illustration, black and white line art, pure white background, bold clean outlines, smooth continuous lines, highly detailed but easy to color, large enclosed coloring areas, consistent line weight, crisp vector-like illustration, symmetrical and well-balanced composition, printable coloring page, educational children's activity book style. NO COLOR, NO GRAY, NO SHADING, NO GRADIENTS, NO PHOTOREALISM, NO PAINTING, NO 3D RENDERING, NO TEXT, NO LETTERS, NO LOGO, NO WATERMARK, NO DARK FILLED AREAS. Make every important element clearly outlined and separated so a child can easily color the dragon, scales, wings, claws, rocks, clouds and flames. High resolution, clean printable line art, portrait orientation, A4 coloring book page.