I'm going back and forth on adding in some small streaks of the green and bits of silver. Here's what I'm thinking as of now: 1) Base coat - Color match to the beige/light gray in the pillow that comes with set (see picture of forest green comforter I added above.) 2) Add a FEW streaks ("strie"- the vertical lines), of the green and light gray (or whatever the "beige/light gray" pillow color is). I would add maybe 1 streak of each every 7 - 8 inches. I probably wouldn't even be using a teaspoon of each color for the entire wall. I doubt it would even show in the pictures, but when one is in the room, they would see a very subtle lines of the green and light gray. And if I even change the comforter, I could just paint over the green and light gray streaks. 3) Add the metallic paint (something light and "pearly") as the final coat on the headboard wall. 4) Paint the rest of the walls in the base coat (the beige/ light gray color matched from the pillow.) I really like the "drama" of the forest green comforter against the light walls. I also love that large gold metallic vase in @Molly 's picture. Thinking of doing something like that in a pewter. Now just have to find a massive vase that doesn't cost $300+ dollars.

I happen to love toile and have blue and white toile wallpaper in my bedroom. But yes, do it on all the walls, especially since the wall behind your bed doesn't leave much room for any sort of large-scale pattern. The mirrors and headboard take up so much of the space. You could also paper the room in grasscloth, which gives color and texture without a busy pattern.

Regardless of forever home or not it would make sense to utilize the closet better for all of your 'office' stuff so if that means getting an outlet put in there so the printer and all your stuff on the tall shelving can go in there - that would be wise. Then, daybed or not, replace the tall shelving and nightstand with a continuous low closed storage furniture piece - maybe like this photo - this will open up the room visually. This furniture piece can function as a nightstand and office storage. Closed storage is your friend in this space. Replacing the closet doors with slider doors would allow for the 'office' to function easier. Maybe the inside of the closet is converted to half 'closet' for guests use and half 'office' with shelves for printer and office supplies. Then, once you decide on daybed or not I'd repost an updated photo and we can help with rearranging art. I think where you have it now is not doing the room any justice. I could see it consolidated/edited on the wall where the tall shelving is as that will create a focal point.

A "natural" focal point is most often architectural—fireplace, picture window/french doors, vaulted ceiling—that catches your attention. A wall with paneling, wallpaper or a contrasting paint color is a focal point. A grouping of photos, artwork, a bold rug, even the TV can be a focal point. A room doesn't need to have just one; however, more that three focal points can be visual clutter. Your room's natural focal point is the picture window. You could further define the focal point with a tree or plant that fills the space like THIS. Regardless of whether there is an obvious focal point, I like to repeat color across the room. Do you have favorite artwork? Try to find drapes, throw pillows and a rug that repeats the main color(s). Is there a prominent color in a room visible from this one? Repeat that color in this room. Here is a Houzz Article on this subject. While furniture is often placed to focus on a focal point, it doesn't have to be. It makes no sense to face all the furniture towards the picture window if you are also putting a TV in the room. For comfort's sake you set furniture so the TV is easily viewed while sitting.