A whimsical, heartwarming illustration for a 'Cute & Cozy' coloring book cover, featuring a cozy, inviting scene. In the center, a soft, plush armchair with a warm knitted blanket draped over it, surrounded by delicate touches like a steaming mug of hot cocoa with marshmallows, a stack of books, and a soft, glowing candle. The background should feature soft pastel tones, perhaps with a subtle gradient effect, and elements like fluffy pillows, fluffy clouds, and a warm, welcoming atmosphere. Include small, charming details such as a sleepy cat curled up on the chair, twinkling fairy lights, and a scattering of autumn leaves or gentle snowfall. The title 'Cute & Cozy' should be prominently displayed in a playful, elegant font with a cozy texture or pattern, like knit or watercolor, while the subtitle 'Coloring Book for Adults and Teens' is placed beneath in a clean, simple font. The overall tone should evoke feelings of warmth, relaxation, and joy, blending playful elements with a peaceful, inviting atmosphere book cover