This is my first time on this forum and also working on my very first Skyrim Mod (a player's house/home) and doing so, I stumbled upon a problem I just can't solve.
I want to create some open spaces in, let's say, the ceiling, through which the sky is visible, a skybox in other words. Can anyone please tell me how to achieve this? I've sought through the Bethesda tutorials, Googled for this technique but can't find it anywhere.
Also I've examined some existing in-game dungeons/houses via the Creation Kit but don't know what to look for

Is there someone who can please show/tell me how to do this?
To be sure there is no misunderstanding, I am still in the process of creating an INTERIOR in which I want to make some open ceilings, maybe a dome through which the sky is visible.
Thanks in advance for your time and effort, I really do hope someone has an answer/solution for me!
Greetz,
TheCrow68