I found the birdcage from the Everyday Pop-Up Cards cartridge to be pretty easy to make. This time I actually used the card base, which comes out to be a perfect A2 sized card if you size it at 5 1/2".
Again, as you'll see in my video, I used my Gypsy to make layers for the pop-up pieces.
Papertrey Ink Berry Sorbet, Summer Sunrise, and Dark Chocolate Cardscock
Papertrey Ink Distressed Dots Patterned Paper
Sakura White Gelly Roll Pen