Well done! Looks very charming :)
Like the other commenter, I've thought about something related before. But I thought about it more like on a platform. If I may... You could make an account and digitalize your bookshelf for you and others to see. You might pin notes, quotes, ratings, open a discussion thread (about paragraphs or the whole book), etc. to a book. The cover art that is displayed could be changed (like a book that was published multiple times under various publishers), but not only to original covers but also community made cover art (pixel art, collages from movie screenshots and so on). You could tag your books and rearrange them accordingly. And so much more...