Upcycle Progress- Pop-up Book

Recently I noticed that LEGO just released this year’s IDEAS set- Pop-Up book. It’s really a impressive create! They also provide user manual on the website so I try to search the demand material in my house. Following picture shows pieces I found.

After double checking with the building instruction, I had sufficient component to build the dynamic part of this model but the shell of this pop-up book requires several green large pieces which I can’t find it. I will try to buy it from local store or maybe my roommate have some.