What color is the floor and what style(s) do you prefer?

Black and white toile for the chairs?
https://www.houzz.com/photos/2011-hhl-living-room-contemporary-living-room-phvw-vp~135992

floor color is just like sf cow hollow picture. . should I use a fabric pattern for roman shades? or woven wood? ottoman? coffee table. rug? sisal?

I'd say browse through a lot of pictures with the right searchwords and see what you like most. Make a separate ideabook to narrow down ideas, so they can be turned into plans.

Remember to keep your color design without using "fad" colors like the new lime green. I would love to see you use that green as an accent with your navy sofa. Very lovely and current..........If you live in the NW, or somewhere where it is kind of grey outside a lot of the time, be sure to keep the wall color one that will reflect light well (warm rather than cool)..we live in Oregon and have to be careful in that regard. I like the idea of painting large pieces of cardboard with your color choices and taping them to the walls. Watch how the light works with various times of the day and evening....good luck...it will look beautiful