Onboarding illustrations for a fictional chat app

A little backstory…My brother is working on his iOS Dev portfolio and asked me for some help with the looks of his chat app. I did some sketches in a direction that would be expected for an app like this but then I had an idea. We are both huge fans of creepy, victorian, haunted houses and horror and when I showed him these that was it. Will be sharing more soon or if you want to see more of the app you can check out his portfolio here