Nice start. Rugs are good to anchor a space, like you've done in the living room. You could do the same in the dining area with one large enough that when the chairs are pulled out, they are still on the rug. You add a side table along the short wall in the dining area which also defines the space and where you can begin to hang art. You might post another photo so show the living room area and what is to the right of the sofa.

go for bigger rug and use some sort of partition or room divider which can be work as a storage also

Need more photos. Can you turn the table so the length is facing out? Can you turn the couch so the back faces the dining table?

I am not a fan of rugs under the dining table because they are a pain to keep clean, IMHO.

Art work and a buffet/server would go a long way to "fill" the space.

Get a large piece of wall art for both over the couch and dining table set, from a local artist, or art.com. Lighting: to create a proper atmosphere in the living room, in each corner put a table lamp or wall sconce at chest level.

I tried turning the table this way , but it leaves little room to walk to the kitchen

I also tried with a larger rug and it covered half the room. Did like it that much.

Also, these are not the chairs I would use for the living areas. We are the chairs from the dining room set. I used them as a place holder just to see how they would look.

I am still not sure what kind of chairs to buy. I do lot want the room to look crowded

I see a couple of sleek black leather chairs to complement your setting.

You may not need art if you tell us where you have placed the TV?

Your living room rug is too small and makes the space look cramped.

You have the dining set turned the right way, but it seems almost shoved against the wall. Is it centered under the chandelier? If so, you may need to move them both out toward the living area a bit.

Art in both spaces. You don't need anything to fill in the space between.

We have not added any art work to the wall as yet.

We will be using our wedding photos as art work

Regarding the dining table, I tried it that way to see how it works

We also tried with larger runs but they took over the place

A couple larger canvases would look best. If using Wedding photos get black frames with wide white mats. B&W photos would fit your neutral palette. I would add a shot of color with paintings.
BTW I remember living with dining set chairs for a while while I search for the perfect side chairs.

Geez no black leather lounge chairs. You'll just have to add more and more lighting to combat the black holes throughout the space

There is more than enough black in the room.

Safavieh Easton Club Chair - MCR4572H · More Info

Safavieh Arlette Velvet Retro Mid-Century Accent Chair, Hazelwood · More Info

GDF Studio Gadot Gray New Velvet Modern Swivel Chair · More Info

Can you share pics of the rest of the space? Is there a bay window or flat?

You could place your framed wedding pictures on a picture ledge so that pictures can be added to over time. However, wedding pics are usually placed in the private spaces of the home.

Your room needs a lot more dimension and texture to become and interesting place to stay before you start to concern yourself with the walls.

You could use a rug about this big, armchairs on either end of the coffee table, and big art on the wall behind the sofa. You might also think about getting a coffee table with a little more visual weight. This one virtually disappears.

What size is that rug?

I will try with a larger rug

There will be no TV in the living space

BTW, there is rug has gray in it also, the cushions on the sofa is blue

What kind of curtains would work?

Following

T M, we can't suggest curtains unless we can see the windows.

Th expense of moving the chandy and repairing the ceiling will be worth it. Flank the sofa with a pair of floor lamps, add armchairs, a new coffee table, art and curtains.

Here is the window

Blue, eh?

Ah, the window is a bay. I personally dislike curtains on a bay. I would do shades, probably plain linen romans, and use the platform for plants.

P4p

Where did you find that blue rug?

Sorry, I believe it is a gray rug

MOD-1013 Rug from Medora by Surya | PlushRugs.com · More Info

https://plushrugs.com/surya/medora/mod-1013/#79384

Larger rug different positions of the furniture

Different position of the couch and larger rug

The rug is a good choice. I'd also go for a large piece of art or maybe a gallery wall. Spacing can also fill the room; something like this with a piece and 2 off-set mirrors. https://truelofts.ca/slate-image/rets/C4545597/1/9-cbd6de14-4f71-4ee3-b6ff-e692ba3001ad-1200.jpeg

The larger rug is a definite improvement. Pull it 1/3 of the way under the sofa and make sure it's at least a foot away from the window wall. Your "stand in" chairs just need to have front feet on the rug.

You need more curtain panels. You should have at least 2 1/2 times the width of the window if you're going to close them. When you close your curtains, they should still drape in folds and never never never look flat.

I have bay windows, so I will be removing the curtains

...

Any idea for a good piece of art for the wall behind the the sofa?

Art is so very personal, IMHO. I like the older Monet styles of art, but something bright and bold would bring an infusion of color. Do you like contemporary? Do you like abstract? Do you like impressionism? Is there someone local that speaks to you? Do you want people in your art?

Try a poster from art.com because it can be cheaper and may help you.

We have a Hyunah Kim and a Vassileva in our hall bathroom!!

I have impressionists in our living and dining room and a TC Steele in our dining room.

I also have some original art in the LR/DR.

The others are posters.

So, what I am saying is, art is very personal. You need to find some that speaks to you!!!

Can you share some pics?