I really loved this cardstock with balloons all over it, but it was a busy pattern so I have had this cardstock for a long time but have not found the right project for it . . . until now. The balloons made a perfect backdrop for this card, and since it has variety of colors in it, that allowed me to coordinate a lot of different solid colors for the pop up elements.
Below you can see the inner piece of the card that all of the elements attach to. It folds in a zig zag pattern and attached to the inside of the box. This allows you to easily fold the box flat to put in an envelope. I cut this in the same green as the base of the box so that they would visually blend together . . . yes, you will still see it when you look at the card, but it will not stand out.
Instead of doing the cut that said CELEBRATE to place on the banner, I cut more stars and wrote my nephew's name on the banner. I thought this was a fun way to personalize this card.