If it were my room I would change three things: The curtains and lower the art and other decor to the right height. All your wall decor is hung too high. It should be ~58 inches from the floor to the center of the art/mirror (if you decide to keep what you have). I would choose a different DR chandelier.

The single thing that jumps out the most is the curtains. The drapes need to be more full and hung high and wide as panels along the side of the window without the tiebacks. To get that full look, you need 2.5 to 3 times the window width for your panels. Like this:

I would paint the ceiling white, make the outlets match the wall color, remove the tiny mirror, print, and shelves, lower the artwork, and remove the curtains, and the tall vases on the table.

Then step back and consider where you want this room to go. Please post photo of connecting room, since that is important.

Is painting the walls, changing the floor, or the light fixture a possibility? Would you consider adding wall mounted lights to add a different level of light? Do you have a budget?

Since the window is off center, if you want curtains stack them to the left. Buy enough panels so they are not stretched out when closed, at least 1.5 times the width of the area they cover.

When the drapes are hung properly, the window won't appear off center at all. Right now the off centered window is featured because of the way the drapes currently are hung.

Maison Noir · More Info

I like it very much that you have not crammed furniture (server or China cabinet) in a space where there’s no room. PERFECT! I don’t like drapes but if I did, I think I’d use something shear so they’d be invisible. You have blinds you can close for privacy. (But privacy from what? You’d only be eating, unless you eat in the buff...). On side with shelving, I’d remove it and small art and replace with a bigger art piece. I’d be afraid of bumping my head on those shelves.