I didn't even break any! Success!
First, I put a piece of foil on the iron, put the shadow on top, and then another piece of foil to protect the shadow. Can never be too careful! Then I left the shadows on a hot flat iron for around 3-10 seconds (depending on how long it took to get the plastic soft), then I stuck a pin in through the back to separate the shadow from the plastic. But I did it verrryyy carefully! You don't wanna go through the actual e/s pan! At first I thought I was supposed to leave the shadow on the iron for 15 minutes (heard that from a youtuber), so I left Crystal Avalanche of there for 10 minutes before depotting. Eeek! Burned my fingers when I tried taking it out. :/ Luckly a wonderful MUAer told me to only apply heat for 3 seconds. Much better! Worked great and I didn't burn my fingers. I was mostly worried about breaking Gazette Grey, but luckly, I didn't! Hurray!
Thanks for looking!
Love,
Sonia