Really like the rug, but the coffe table sems a bit 'Blah". It would be helpful to see more of the room layout, I don't get the white chair in the doorway, is that moving? Couple areas that jump out at me for a possible tweek...Is the tv going to stay, it seems so small for the opening, pehaps if the interior were painted olive it would not stand out so much. The right hand shelves have too many items and they are too smallish, nothing stands out as important. Perhaps an edit is in order. The fireplace stone is really lovely, but the fireplace screen covers it up and doesn't seem like the right style for the stone, too frilly. Is there a need for the screen, eg. it is a wood burning/working FP. Would like to see different furniture layout as just the one chair seems focused on the tv, maybe the sofa could be on an angle? Is # 2 your fabric for window treatment? It looks like a nice starting point! Have fun!

I don't like the rug, as it's too small and doesn't match the traditional feel of the room. Something like this would work better:

Here is the correct sizing for rugs, that one is too small:

Unsure about that fabric for curtains, as I think it will darken the (already dark colored) room. I'd probably go white floor length panels, you could do small pattern if you wanted something with interest.

Agree with monwheels about blah looking coffee table. Also- why is it so far away from the couch? Should be close enough to play a glass (or your feet) on. You have the space, you could go square:

I think that back sofa needs to be pulled up. It looks stranded back there on its own and so far from everything. The rug is also too small.

Agree with what the other's said about the coffee table and shelves.

I'm not crazy about that curtain fabric at all. I think it would darken and date the room. It also looks very heavy. I think white curtains would add some softness to all those darker furniture pieces.

I like the table suggested by Cara. Art is so personal, but here are some ideas for art and mirrors.

What about something like this for drapes in a very pale taupe? Should be long enough to reach the floor.

As for the rug, if you want to go solid, don't go super dark, as the walls and furniture are already dark.

Some ideas for rugs: