A professional YouTube channel banner for a shorts channel named "Colour Filling Shorts". Clean white background with soft pastel splashes of color. Hand-drawn sketch outlines of butterfly, flower, animal and cartoon shapes partially filled with bright colors. A realistic paint brush and color pencils adding color into black-and-white drawings. Smooth, calming, creative art style, kid-friendly but professional. Modern flat illustration mixed with hand-drawn sketch effect. Center text: "Colour Filling Shorts" in bold, playful handwritten font. High resolution, wide YouTube banner layout, minimal, aesthetic, no logo copying.
