I used paper by Kaisercraft for all the sections - from the 6.5" x 6.5" paper pad, Holly Jolly.
As the front of the card is lifted, the folded inside pages begin to unfold.
This is the inside fully extended. I do have to wonder though, how do you display this card - I guess you have to keep it closed and then when it's opened - Surprise!
It was fun to make, and if you are interested, do check out Colette's video tutorial!