Your house is looking very elegant and beautiful in white color, I suggest highlight the elevation with grey or brown shades. If you would like to have expert advise, I suggest contact Asian paints color consultancy personnel, they visit your home to advise on colors. I hired their services for both interior and exteriors.

I am not sure if this project is over, But try zinc sheet it looks great and gives you an industrial look.

two basic issues your room floor is dull is that floor to floor carpet if yes then add a a smaller area rug under your table to get splash of colour, alternatively if you dont want to do that then add some colorful wallpaper behind the sofa. Where you have the table lamp add something taller like a modern floor lamp or a tall spread out palm plant. Take the table lamp and add to a side table if you have one. The second biggest issue is that you have a lovely modern sectional sofa and then you have paired it with a very traditional and very high coffee table that looks like it has marble inlay work done (cant make out clearly). This is not a good pairing. The coffee table is the right size but get something modern and a lot lower, a general guide to this would be one inch to 2 inches lower than the seating height of the sofa. As someone else mentioned an Ottoman that can serve as a coffee table in an alternate colour will also work. Paintings and wall art is something you can experiment with but unless you do something about the coffee table the room will continue to look odd in my opinion. Also some more shots of the room will help us get perspective.

The plan of the constructed building is required so that the elevation could be designed and 3D modeled according to the plan because its necessary to know the functions behind the wall before providing any design element. The more info and photos you provide the more helpful it will be to design Contact and Whatsapp : +918515033631