dragon castle coloring page for kids, castle with towers and flags, high detailed line art, no background, white, black, coloring book, sketchbook, realistic sketch, free lines, on paper, character sheet, 8k, coloring pages, black and white, creating a dreamy and magical setting, inking, graphic, concept art, ink outlines, smooth, high definition, concept art, coloring book art, coloring book style, colorful line art, no shading --v 5.2