Pop-up Card or Card In A Box

Hope everyone had a great 4th of July!  I was able to do some card-making and I attempted a card in a box or pop-up card.  I found a tutorial on Splitcoaststampers and had fun trying it.  After I made it, I discovered it only fit in a 6x9 envelope.  I then found a video on YouTube to make a standard size A2 card.  Then since I could not find anything on a card to fit a 5x7 A7 envelope, I worked on those measurements myself.  A lot of trial and error but finally I think I got it.  Still have to decorate them but here is how they turned out.

6x9

 5x7 A7

 A2 size 4 1/4 x 5 1/2