Could you post a picture please?

Looks like you may already have a little bit of color blocking going on, but I'd increase the contrast between the shades of paint. Do you have access to the original paint chip card? Paint two of the walls in question in two different shades from that same card. Consult with the paint source for the complimentary color to accent the third wall. I think the middle wall to the right of the stairs would be the one I'd accent. Then add a large piece of colorful abstract art to that wall. Here's a quick tutorial on color blocking. https://www.houzz.com/magazine/building-with-blocks-of-color-stsetivw-vs~639

First of all I think you should better take off that sofa covering(the floral one) off!!! There's already soo much of texture and variations that it's all looking cluttered at one place! You can go for a tone of beige lighter than that of your sofa with textured effect wall paint and couple it with a nice large sober painting. See if there's a provision for adding a spot light over it as well (on the ceiling).

Sachin Goyal 11:10 AM Hi I have a 20’ feel double height wall In my dining area And may b 12-14 feet wide. Can you please suggest what best we can take use of it I want to make a beautiful 5d or 7d painting On it. Can u suggest for this or if u have any other better option please suggest