One thing I noticed and I'm no pro real estate photographer... My eyes were instantly drawn to the wrinkled bed spread. Since the bed takes up more space in the photo than it should. I would say use a wide(r) angle lens. Get some of the ceiling in the shot.
I agree about the bead spread, it bother me as well. But the OP did say it was just a practice shot. I suspect his attention was on lighting the room. In real work, you may be faced with a similar problem in which case I would ask the home owner or agent about correcting the bead spread. In shooting RE the emphasis is always on the room, not the furnishings.
If this room is small, a sufficiently wide lens may distort and will certainly make the room appear deceptively large which results in an agent having to make apologies to a buyer when the room is actually seen. You gotta be really careful with UWAs. The goal is always to make the room look its best but to do that honestly. As to the ceiling, one of my clients - and older broker with a long record of success - specifically asks for less ceiling unless there are interesting details in the ceiling. She says that ceilings don't sell homes but floorspace does.
OP, I don't see anything too bright and I think the light rays through those blinds are good. They are not too bright. The room in the background adds depth to the image and it being a little darker is OK. You might like them equally lit but you have to decide that. I often lower the light in secondary rooms just enough to bring the focus back to the main room. Hope that helps.