Making the Spiral Crystal Light-Up Pop Up Card

I made this card for the 2024 #LightUpPopUpTober event @chibitronics is organizing on Instagram. This video is a walk-through of building the card.
Stills and more text on the blog:
evermorestud.i...

[@natalies.250]

Amazing! ❤

[@scottpearson1785]

2:44 can you please describe what you are doing here and what device you are using is?