TECHNIQUES - POP UP ATC

So I thought this would be a good way to share/try techniques on ATC's that would inspire us to use them in future projects.

For this one you must create one ATC for each of your partners. This ATC must have a door like feature, so when it opens you get the effect of a pop up card.

Sender's choice, so you don't have to wait till you get partners and you should be able to send early. Also, make something you would like to receive.

Must have at least 10 snail mail swaps under your belt, extensively filled out profile and a 4.9 or higher rating. Profiles will be checked.