I want to adapt Vermis for a Shadowdark "setting"

I bought Shadowdark a few days ago and I love it. I've already played a bit as a player and I really want to DM it.

And recently I've been obsessed with Vermis by Plastiboo. It's an official guide for the game Vermis, a dark fantasy game with heavy lore. And it's a game that does not exist. If you didn't know about Vermis go check it out it's really good. And I think the universe show in Vermis suits really well Shadowdark.

So I wanted to know if you had any tips for how to mod Shadowdark, maybe some references or zines to look at.

Btw I know Vermis is licensed so I won't post anything of the book, it's just for myself.