We strongly recommend you join the Darkest Dungeon - Workshop group, to discuss your mod with fellow modders. We also have a guide to help you get started:

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=819597757

Finally, please remember that Red Hook Studios cannot be responsible for any damage to save games caused by subscribing to mods. As mod creators, we of course encourage you to test your mod thoroughly before making it available to the public.