A vintage stamp-style illustration depicting a whimsical tree house library built inside the hollow of an ancient oak tree, with tiny windows glowing warmly and miniature books visible on carved wooden shelves. A friendly raccoon wearing spectacles climbs the tree trunk carrying a small lantern, while autumn leaves swirl around the magical reading sanctuary. The design employs warm autumn tones of brown, orange, cream, and muted green with fine detailed linework, soft shadowing techniques, and classic engraved textures reminiscent of traditional postage stamp artistry. Decorative scalloped borders complete the vintage postal aesthetic. The design is print-ready, fully isolated on a white background with no shadows or textures, fully contained within canvas boundaries with no cut-off elements and proper margins around all elements, and intended for use in t-shirt printing. | PODspy AI Design