Minimalist Twilight Sun and Star Farewell Illustration

Full prompt

A clean minimalist split-tone storybook illustration divided vertically down the center. The left half is rendered in a soft pastel peach orange twilight, while the right half is immersed in a deep serene midnight blue. At the dividing boundary, an adorable smiling cartoon sun on the left and a cheerful twinkling cartoon star on the right wave goodbye to each other. Both characters wear wide joyful grins with tiny sparkling highlights in their expressive eyes. Simple geometric flat vector shapes, smooth gradients, charming storybook aesthetic, cozy bedtime mood, 2:3 aspect ratio.