Did not expect to see a request like this here of all places. Don’t get me wrong, people talk about design here all the time but I’ve never seen book design talk. And yes, to your luck, I have something to share here, something you are going to like that’s for sure. Here you will find the design mockup you need https://www.ls.graphics/mockups/stationery-mockup . You won’t find better mockups anywhere else.