What I would like to see for the Diary book is something like this
http://www.iconarchive.com/show/mixed-icons-by-simiographics/Book-icon.html or this:
http://www.redmebol.com/coloring-pages-coloring-book/coloring-pages-coloring-book/ for the book appearance and orientation, lets keep the "D" on it and try to include a pattern on the book cover. Thanks