removable back board

Ok so playing around helps me design! An excuse to play! The paneling will most likely match the style of the great room. The wainescotting could use more but what? quarter round, hand rail, anything else? I may put sconces on the back wall, I hate working with sconces due to the level of diffeculty, but I think it could be simple on this wall and the crown molding will match what I have used so far. I dream of two way mirrors so once its completed [ like that will happen ] I can still look in from that side, without removing the backboard if I dont feel like it. OR those fabulous panel door insets from Bespaq, just peek through a door!