Need help with lighting

[LulleBulle]

I'd start by actually putting furniture in before you light the place.

Why? I'm not really planning to make it a "furnitured" room, It was mostly for testing.

Try this one then:

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This has nothing to do with lighting but, replace the default walls with the default_extension for the upper part of the walls, looks better, and don' forget about supports, beams, pillars etc.

I know it's hideous but I've had trouble locating the supports etc, but I'll keep looking, thanks!