Is the chandelier thing seeming a bit small for the room or is it just me? Given that your walls are plain, the sofa is plain how about a patterned rug? Do you like Persian rugs? I find that dark green wainscotting too heavy and would paint it a lighter color. Given you have just moved in I assume you are planning to be there a while. If you like traditional style do you want a fairly safe color scheme re walls and curtains, keeping future resale in mind. Or are u happy to decorate according to your tastes? The mirror seems a bit small to me.

I think it is a matter of who likes apples and who likes oranges. I am in Margo's corner on this one....but it is JM humble O. The purple tones of the grass mat wall paper nice, more modern, the gray tones, a little more traditional. So either will achieve a nice look, it's a matter of taste.

Take out sofa, use beanbags and those blow up seats for their friends. Coloured rugs for tumbling and crawling on. Supersoft teddy bear blankets so they can curl up. Add in one of those soft blanket boxes for toy storage and so you have somewhere soft to perch when you are with them. Paper half way up the wall in the wall paper that kids can draw on, so they can decorate in whatever colour they like and you won't mind. A childs lift up desk, bookcase and some crazy lamps in weird colours. Then close the door, collapse on the sofa that you have moved, breathe a sigh of relief and thank your lucky stars that you have another room for the kids to go to. (Grab wine and pretend they aren't yours for half an hour! ;-) )

Adding width BEHIND THE BED - with a headboard (which doesn't have to be a "headboard"; it could be fabric, collection of mirrors, collection of pictures, a farm gate!, small chairs or stools) across the entire width. Matching bedside tables/bookcases/chests/ with LAMPS - useful storage for extra books, extra bedding, etc. CURTAINS always warm up a room. People will always feel colder away from home - provide an extra blanket or duvet to add to the bed. I notice there is no WARDROBE. Not really necessary for overnight guests (provide hooks on the back of the door) but useful for storing your out-of-season coats, etc. There is plenty of room behind the door. Buy one on eBay and paint it to suit your colour scheme.