hmm, that is
scary, but it's exciting too. Maybe you could
make more and show them off at a show, or use them as inspiration for larger pieces. And if you can't get a show, at least you have an awesome set of art that you made
. As far as your personal stuff, if they mean so much to you and you don't mind others seeing them, you should display them on your own wall, either as is or framed.
As for ones you've received, I don't think you should put that type of stuff in a book. Art like that should be enjoyed without having to think about enjoying it, ie: remembering it's in that one book, locating the book, looking at them for a moment and putting the book on the shelf.
I'm excited for