Looks wonderful except for the gold-green paint on the fireplace wall. It is a bit too yellow compared to the other finishes in the space.

I like things that you have but I would suggest the paint all the walls a dark grey for more drama and also add a rug for warmth and unity .

Chelsea Gray (HC 168) Benjamin Moore · More Info

Loloi Flora Collection, Ivory and Green, 5'x7'6" · More Info

60-Inch Papyrus Floor Lamp - 8005-22 · More Info

Have you tried your two chairs where the couch is and place a table/lamp in between and maybe lower your art just a bit. Place your couch/coffee table facing the fireplace with a table on one side and a floorlamp on the other. (In picture below, imagine both single chairs next to each other and tv where the chair is). Add a large hemp or sisal rug. The corner near the tv feels empty and you could add a small bench and add pillows under the window. Accessorize your coffee table, hang mirror over fireplace and reaccessorize the mantle with only a few larger items. I would paint the whole room the same color a greyish/green and I wouldn't tie back the drapes..just let them hang down.

Palmetto Bluff Cottages · More Info

GDF Studio Hudson Fabric Storage Ottoman Bench, Ivory · More Info

You have purchased yourself into a wee corner. Some good ideas above for your existing pieces, but on the day you decide to try again, consider a few other options:

Move the TV to the other end of the room. Wall mount it where the artwork is now, and add a long console beneath. Arrange you seating accordingly.

New furnishings will appear less weighty if more leg shows, and less of it matches. Replacing wood with metal and glass has a similar effect. Both can make the room appear more spacious.

Accent pieces can't work if they cover over the piece they are intended to support. Fewer pillows and tiny bits will allow what remains to be better seen. (Coasters are best not seen at all until needed).

To kick up your existing window coverings, consider cornice treatments.