If you love that wallpaper, use it in bathroom. Not really right for behind bed. I would go a drum style chandelier. In a silk pale gold. Your bed looks zen or Asian to me. I love it. But, you don't. Need to much with it. Keep it simple a more formal drape on windows, color would depend on wall color and bedding. I'm thinking a dramatic peacock satin. Use a lighter same tone on walls a rich teal. Ceiling can be gold leaf. With alight that cast shadows on ceiling at night. Then your wall paper will tie in. Furn should be mirrored.

It depends on the style of your furniture and home ,if you can , please post a picture of the room ,stair case in question this would help .

To keep the symmetry my one and only idea is to put in 2 "Fan Chandeliers"

Hi, Basically it depends upon the sitting area where you sofas are placed other thing ceiling concept is also most important to analysis.. final and better thing will tell after analysing the site. Hope it helped.