thanks all for replies. I want to highlight the wall as rest walls are almost white and need some change. there are white tiles on the floor, red sofa set and mostly brown furniture. I have planned to give a grey texture on the front wall (hoping it will look nice with red sofa). the wall beneath the light( in the photo) will continue to be white. though I would like to highlight it in some way as I have kept a box console in the photo above which a round mirror will be hanged. pls suggest

I would advice you to go for all white and then have coloured art and accessories on the wall that you wished to have as accent wall. This way you won't be struck with one colour till your next repainting job. You will also have the liberty to change the colour pallet depending on your mood and season with just changing a few things like paintings ,cushion covers etc. involving very little cost and efforts.

no

Wooden molding in HDF or Teak wood can easily be nailed directly on walls with headless nails. No need of ply or board at the back. Also don't go for POP moldings as they are not durable.