Whimsical Surreal Storybook Character Illustration

Create a whimsical, surreal, hand-drawn cartoon illustration of ${human}, wearing ${clothing}, ${pose} with ${animal} as an animal companion in ${scenery}. Use ${colors}, with a controlled dusty pastel color harmony featuring muted magenta, aqua, butter yellow, and warm cream undertones. Use soft colored-pencil linework, rounded exaggerated proportions, long faces, droopy expressive eyes, playful grotesque organic shapes, delicate crosshatching, painterly gouache shading, visible matte paper grain, tiny floating specks, and botanical doodle details. Use a centered poster composition with clean negative space and a simple ${background}. The mood should be a charming, strange storybook. No photorealism, 3D render, hard black outlines, glossy surfaces, generic background, or chaotic composition. Vertical 4:5 aspect ratio.