Paint the wall behind the bed the purple I have shared. Paint the headboard and door the gold from bedspread, white or grey. Pick up two standard pillows too to add to bed. Add a purple shag rug. Hunt the Internet for abstract glass decals to adhere to walls over bed. Your photo collage should go on another wall- over bureau perhaps - as it is currently hung to high. Putting it over the bed also makes it hard to see photos, which is the whole point. Check out IKEA for fun, inexpensive bedside tables ( not that color).

I would use the greens from your bedspread. Since you have green in the bedspread, and brown and white tiles, those 3 colors need to be your focal point. So I have painted your wall a bright olive green ( the darker color in your bed spread) and the ceiling either a brown to match the tile or a white to match the rest of your ceiling. then or I think this last one is a little tamer . But you should be able to paint over the tile. WHAT kind of tile is it? If it is ceramic you can paint it. Here is a link about how to do it: https://www.sherwin-williams.com/property-facility-managers/education/styles-and-techniques/sw-article-pro-resuscitateold.html

If you love the design it shows best as a wall hanging. It is difficult for our eye to see a complete bedspread design when it is on the bed because of the height. If you want to focus on the center medallion the fabric could be shortened or folded to make more of a square.

In your bedroom, extend your wardrobe till your door leaving few inches. Give more depth and use shutters for small things by providing steel baskets in shutters, give full height to your wardrobe and use upper shutters for seasonal clothes. Design your bed in such a way that it can store your bedspreads, bedsheets etc.