I already posted one of my little ACEO Display Books and here is another one that I have created. I dyed the paper with walnut ink and added one of my ACEO's to the cover. Creating ACEO's are so enjoyable--they are like creating altered books. There are really no rules. You can do anything you want with a 3.5 x 2.5 piece of paper. When I look at all the ACEO's that are created, every one is unique. And I can catch a little glimpse of the creator's personality in each ACEO.