I have a smaller primary roughly 15x15.5 with 2 single windows and 3 doors (to hall, bath and walk in closet) 7.5’ high walls.
5” colonial base and 4” crown molding.
Would you add narrow trim rectangular molding to this size room?
Similar treatment a shown below
(painted in 1 color).

2nd?
I have a queen size crate and barrel Colette bed with two nightstands and lamps on either side.
Would you put two 16 x 16 images above a queen bed or a three 16 x 16 images? Keeping in mind that I have 7 1/2 foot ceilings with crown.