The prints done on a canvas material make the picture look more like a painting.

Why not hang the picture from your dining room above the sofa? It's free! Just make sure you lower it to just a few inches above the sofa.

One quick observation would be to lower the painting in the dining area. It is way to high;)

Your tv console is way to short, You need to get one that is longer. It should be 25% longer than the size of your TV. That would really help that wall. Regarding art over sofa. It needs to cover area in back of sofa 2/3-3/4 the length of sofa back. Because of the drapes being so close to the arms of sofa I would stay in 2/3 range.

A fun way to get cheap art is make it yourself. Measure your wall and decide what size canvas you need. Check on line for coupons, Micheal's, Joann's, and Hobby Lobby usually have some. Purchase a canvas and a couple tubes of paint that will work in your room. Then have fun smearing paint on the canvas, use a paint brush if you want. You'll have a modern work of art by an unknown artist.

You need end tables and lamps. Overhead lighting is very unflattering. Take your time and wait until you find art that you love or has meaning to you. Visit thrift stores and flea markets. You might find something there.

Do you have another corner where you can move ladder shelves?

If you have the correct tv console, I doubt if it will fit in corner anymore. You need an end table and lamp between the sofa and loveseat. And an area rug would be great.

I would think something large and round over the sofa. Not necessarily a mirror. Perhaps one of those big clocks. Nothing too busy.

Oh, and pictures really should be hung at eye level, unless you are covering a wall with them.

The rug should be probably a 6x9 it should go under the from legs of the furniture. Measure a couple of inches under the front legs of sofa across the front of loveseat couple of inches beyond, then from that point across the full length of sofa a couple of inches beyond end of sofa. That will give you minimum size you need. You can always go a bit bigger so it extend out into the room more and more of the furniture sits on the rug.

The rug is from overstock.com ITEM# 14753860 in salt and pepper. The picture is from Pier 1 item: 2798061. If you have a local Pier 1 go get it and hang to see how it looks.