I love the wallpaper on the ceiling idea and the heart picture thing on the wall better than this couch thing. The pic says this couch thing was in a girl teenager's room. I think that is a bit much for a teenager's room.
Hang a curtain rod draped with sheer curtains (or fabric) at headboard height, behind the bed, then add some white holiday lights behind the fabric and across the rod.--- maybe just a string of lights over the headboard :)
Diy Crafts Decorate your bedroom with some christmas lights and sheer curtains. If u dont have a slanted roof just add another two at the posts (can change the curtain colour to match the room ), Diy, Diy & Crafts, Top Diy