Re-read every module. Check for grammar errors or spelling errors. You may even want to have someone else read your lens. I always have one of my teenager's have a look at my lenses and they always catch errors and they often have so great ideas as to what I should add.
Check and make sure each model title is filled out (rather than the default one). For example your guest book should not say "new guestbook".
Ask yourself if there is a module that you could add? I like to add interactive modules like the debate or guest book.
Then, After you push publish be sure to share it with the world. And make sure you send it to me! :)