I see you’ve put quite a lot of thought into your perspective, and I respect that.
Prison background and overlays - #3 by BunandBread
The first prison background is drawn by me. Rough grid lines, lots of line breaks, merged lines and yada yada… a lot of flaws indeed. But that’s my art style. Some of them are Years and Years old. when I was just starting like you said, a beginner. Now, to actually start with the topic, I use Blender, if you don’t know, or even if you do (since many illustration artists dislike that software) blender has lots of tools, one of them is 3D Modeling that allows you to directly place your objects (furniture in my case) in your art and then merge them together like layers. But it requires lots of adjusting, much like how you use overlays in an episode story. And those models are made by people, by other artists (for commercial/non-commercial use) and AI generating tools if you can’t find what you need.
I use that software, I entirely rely on that, especially when making backgrounds for episodes, for free and also because I don’t have tons of time.
Now you might have noticed my arts are free. I don’t take commissions and such, so, pardon me if it sounds rude to you, but why should I really put any effort into making art from scratch if I’m making it FOC? It doesn’t means that I’m providing these backgrounds just to do public or people services. Or maybe you think the rules required to make illustration art apply the same to landscape artists. Which is not the case.
I even agree, I haven’t put hard effort into my landscape backgrounds. Choose a brush that’ll give you a kind of art effect collectively, just drag your stylus on the graphic pad and it’s ready. I don’t see any reason to deny the use of AI generators, especially if you are not gaining any benefit from it.
I hope I am clear in my explanation and thank you for being a patient reader with my long paragraph. No hard feelings.