Create a charming clipart of a whimsical, soft-glowing will-o'-the-wisp floating against a plain, high-contrasted backdrop, designed in a playful cartoon style. Give the will-o'-the-wisp a magical quality by giving off a gentle blue light and adding a friendly facial expression. Make it appear almost weightless, as if it's hovering effortlessly in the air, giving the impression of a mystical, otherworldly creature.