That vignette is too busy to add another layer with wallpaper. You might simply paint it the russet color of your throw and pillow.

Advise against wall paper. It would be too busy with that bedding.

If your bed does not have a headboard, you can easily make one (there are so many internet sites with directions, youtube videos too. Or you can go to an upholsterer to have one made.

It is already too busy. If you go with wallpaper, then get something with less pattern and one color.

Can you show the bedding in your room, so we can see what else is in it? Which pieces of the bedding do you have?