Beginner asking for some help.

[FlawlessHappiness]

1st screenshot:
Don't you think it's just a little bit too dark? I mean there's windows placed literally on any wall. The room would be lighter. And there's even torches too
Can't see much more because of the Mysterious Picture Upload Darkness...

2nd screenshot:
The room is too big.
Much of the space isn't used and it's just blank walls.
Start out by having a small room, and then expand it, when you need to.

Starting with a huge room can be too much. Only make it large, if you have something to fill it with, and at this point you don't seem to
Also remember that a room doesn't have to be a square.

About the lighting, what would people in this room do when it became night? You need at least a chandelier.

Also those candles in the corner... what are they doing there? They seem to just stand there like they're not friends with the other furnitures. Let them socialize a bit. Place them where they have a purpose... Placing light in a corner isn't a purpose...