the biggest culprit in here are the window treatments. lose the scarf things and the mini blinds.
next, paint the lower portion white, and pick another color for the top portion. (not this gray, i just want to show you how nice the wainscot is in all white. BM Simply wWhite)
Hubby will love it when he sees it come together.
new light fixture. I have a very similar light to what you've shown, except it's in the dark bronze finish
rug, depending upon what colors you decide upon.
lastly, declutter. It's very heavy w/the dark furniture, so lighten up elsewhere. for instance, find a bar car to hold the decanters. if you leave out the place settings, streamline the pieces that are used.
Q