I guess you're trying to recreate the first room.
anyways there's a few things that could be said
- In your version of the screenshots the pointlights cover a massive area on the walls where the windows are attached, try to remove it.
- Change the colour of the lighting. It isn't lime green, but it's white tending very little to the leafgreen colour.
Instead of putting that pointlight attached to the wall, make a big one more at the center of the room and try to make it not to touch the wall where the light is coming from.
other than that, it's a recreation, so I don't know if I can give you so many tips about the structure and entities etc lol
BTW, what do you guys think about these?