Whimsical Drawing of a Horned Owl with Tawny

Create a whimsical drawing of a horned owl with tawny and white feathers, striking amber eyes, and wearing a slightly tilted navy blue graduation cap. The owl clutches a neatly rolled certificate secured with a gold ribbon in its talons. It perches on a colorful pile of books, each spine decorated with silver embossed titles, against a soft green pastel backdrop.