Create a character design of a cunning, anthropomorphic mouse with exaggerated features, including large expressive eyes and a sly grin. Surround the mouse with whimsical, swirling ghostly shapes, adding a playful yet mysterious vibe. The mouse wears a stylish scarf, suggesting a fashionable personality, and its fur is sleek and soft-looking. Use soft lines and a light color palette to capture a charming yet mischievous aura.