Here is how the mailable object is coming along for my illustration class. The index cards are acting as my note cards right now until I test print those. They have the exact same dimensions as my note cards so they help me make sure my holder works in terms of length and depth. As you can see, the actual "holder" of the cards with the image on it slides out of the dark blue "case" with my name and website.
Here are the pictures of some of the cards in progress: