There are a few ways. You can install wood panelling. You can wallpaper faux wood /veneer style. Or you can paint it faux wood. The latter 2 are possible because it's on the ceiling; far enough away to trick the eye.

Hi, I am from Assam, Guwahati. Yes it is warm humid place with lot of rains (like kerala). The bookcase is gradually drying. Fortunately last few days were very sunny and airy and my room has two big windows. Few mor details of my bookcase. It is 8 feet wide, 6 feet tall and 11 inch deep. It was attached with wall with 6 wall screw and has four pair of legs.I ask the carpenter to divide the bookcase into 3 part (32 inch each) and two door system for each part. Every part has 6 shelve from top to botom. There is no plywood or wood in back. I made it that way because the bookcase is attached in my room's inner wall I understand that the bookcase may have very little gap in between wall and wooden planks and i am ready for it. But I have no idea that beacuse of faulty mesurement, it became 1 inch gap between wall and sheve in the upper side. In lower side it is very minimum gap. I stop the carpenters to put the glass door. But now I see that they also make fault in making the doors. The doors are heavier that the shelf. The wooden planks are 1 inch thick while the door are 1.1/2 inch thick. I actually visit few hardwere shops here, but most have no ideas what to do and few says to apply wall putty to fill the gap. But my back wall is coloured (old wall, that why) and wall putty will not set on old wall and timber. I cannot remove it now from the wall otherwise the wall may destroyed. I really need a step by step guide now that what to do after the heves are dry, how to fil the gap and how to put the door without further damaging the shelf.

Hello. As you rightly mentioned, there are lots of varieties of tiles available in the market today, including the wooden pattern ones. These designs are offered by almost all the leading tile companies. Well, the patterns/designs are usually on individual's preference, but a natural teak wood pattern would give a natural look as you requested. More than the designs of the tiles, the points that I would suggest to take care of before choosing a pattern is 1. It should not be too dark as it will make the room look smaller 2. It can have a decent amount of texture finish, but shouldn't be over board as it will be a hindrance to walk freely and also cleaning would be a pain. 3 The thickness of the tile, many good companies be of standard quality 4. Easy availability of the tile, in case you have to replace the broken tiles, they should be easily available. About matching the floor with your walls and ceiling, do not replicate what is on the floor (color/pattern), instead go for something lighter in shades (wallpapers or paints) for walls and for ceiling you can consider the wooden theme PVC panels, which are available in multiple colors.

Hi Rishab, You can avoid creating 4" false ceiling and create 1.5 / 2" false ceilings just to let the wires hide and run within the false ceiling. I will not recommend conduits or exposee ceiling unless you wish to do a rustic interior design. You can go for Surface mounted lights and track lights. They are beautiful and are available in different shapes and sizes too.