cupcake snake pop-up card

This is a birthday card for my brother. 

I need the snake to offer cupcakes so I gave it human arms with cartoon hands. I figure if Egyptians could do it with serious art, then I can do it with silly cards. 

I used this mechanism before, two crimps in a paper arm that extends from one side of the central fold to the other side that causes two discs attached to the crimps to rotate the discs a full 90°, which in pop-up terms is a very impressive movement indeed, although nothing actually pops up. 

Both arms start out hidden underneath the portion between the head and the coils. The cupcakes swing around with the movement of the turning discs.

The top snake disc is glued directly to the arm that opens and shuts the crimp when the card is opened and shut, so that portion does move but only back and forth. It moves from 1/2" from the right side the card's central fold in the closed position, to 1/2" from the left side of the card's central fold when the card is fully opened. At that attachment is another mechanism for the snakes head. The head is a bit of origami. When the card is fully opened all the folds are flat. A crimp is formed when the card is closed. The bottom of the snake's head is attached to the crimp. The top of the snake's head is attached to the bottom as if it were a tent that is forced open and closed when the bottom is forced open and closed. So, crimp forces bottom of the head, bottom of the head forces top of the head.

Video ↓ shows card opening, closing, opening,closing, opening, closing, opening, closing...