Its a really lovely room! what a great place for kids to share. I like kids sharing rooms. I think you need another colour to tie it together. I would suggest a blue tone.... teal, navy blue, duck egg blue. to tie it together. Its a little to pale and looks sparse, but actually isn't. I would leave everything exactly as is, BUT, paint the back wall behind the bed teal and find a simple navy blue wall decal that is fun and kid- like maybe one with a sillouette of a boy and girl playing. I would paint the wall behind the sofa duck egg blue. Then I think it would suit both kids more and look more kid friendly. the blues will balance the pink and cream, but because you have a pale carpet i don't think it will look too dark. don't worry about making it totally kid like, its a room they will grow with, not a kindergarten, and it also needs to peaceful and restful for sleeping. besides with their art on the walls and bright toys everywhere it soon looks bright and kid like. Good luck!

yes, you can use wooden window frame and shutters. provided wood should be properly seasoned and both ends are sealed by using liquid wax.

The elevation as such looks great you may include greenery on the boundaries. Just too many horizontal lines on the front facade may be a few lesser would be good. Parking space is valid point, raised by respected member, with respect to floor plan. You must correct that. For Windows it is better to have a ledge for rain water and sun. Thanks, Nitin CORNERSTONE DESIGNS Bangalore

You can go for Toughened Laminated Clear Glass. Which will make it difficult to break in. (6mm toughened+1.52 PVB clear+ 6mm toughened) Should do. If you want more secured then triple lamination is the best option.