There is a specialty lighting store near me that I am going to soon with photos to work on lighting at my house. I will show them your photo and see if they have an idea. Probably won't be till Fri or Sat but will get back to you.

OSB board will do the trick. You need another photo for us to offer a species and finish. Natural finish (clear coat...water based polyurethane finish...NO oil modified) in a low gloss or satin finish on white oak with FLOOD LIGHTS will offer the same "look" as the poor photo. Beyond that, you will need a better photo.

plan seems to be ok vastu wise. (assuming north -south axis is diagonal and not aligned to the axis of the house) regarding son's bedroom 1 - try making the washroom more square towards the left exterior wall and the box room in front of it. Best to keep wet areas together, i.e. wc, shower and tub in one zone and dry area i.e. the basin in one zone. Also you could change the orientation of the bed as there is no privacy in the current layout. Maybe same as guest room's bed orientation. Another option would be to to re orient the door. the dining area also should have some window opening. The master bedroom, in spite of being of good size, has hardly any wardrobe space. The space before the 2 pillars could be used for wardrobes with some rework on the walls and door alignment. I feel the whole plan needs some re working to take out the best use of the space. You can send us the autocad plan and we can help you rethink the layout along with interior design help.

Hello, I feel that you can design this bedroom by having 1 opaque wall at the back, and 3 transparent walls using glass & steel or glass & wooden french doors. The walls should be white, with minimal accents of blue or green, use 2 layers of curtains with sheer, and brass hanging lamps. All doors can be white PU paint. Waterproofing this bedroom will be essential, so make sure you have sealed all joints and surfaces, with a minimum of 2 feet roof overhangs. Hope this helps! G