Thank you for all the work you've put into this. I'm not fully sure about the target audience you have in mind for this material. Anyway I wrote a list of comments for the document you shared. They are opinionated, maybe based on my wrong assumptions, but not intended harshly.
https://www.figma.com/design/EQGGzqihPjtkoLoaZU4Pbw/Nostr-Poster-(Copy)
I hope at least some of them will be helpful for you.
