Its nice , love it , i am sure there is a cost involved in the making. Its elegant and simple , love it

Rajesh--I would consult with a designer/architect in your part of the world to correct the reiling deficiency. I cannot speak to building codes in what I am guessing is the far east, but your local architect can. Attachment of the railing, to the floor and to the stairs, in terms of rigidity and support are important, as the rail will slope by the steps, and need to transition to a straight rail at the landing, and terminate into the white wall at the landing. Also, the architect can verify that the steps meet codes in terms of rise and run and the gaps btw. the steps, which would not pass code here in the U.S. I cannot see the while inside wall as you ascend the stair, so all I can suggest is installing a nice piece of art, possibly a triptych, of something culturally fitting for your part of the world. I wish you well in your design pursuits.

I often look at my home and wonder what color to repaint...but I think we have selected the most complimentary color and don't want to change for change sake. Consider that as well - I love the starkness of the white for the style of your home and if you feel you need an update, maybe there are other things you could do, ie: landscape, stone, etc. Not much help in the color department - lol.

Any bright Pastel shade like purple, peach with some prints on it will..enhance the room along with contrasting shades of pillow covers.