Too broad a question. Need to see picture, furniture, design style, space , colors in room.....
You need to be more specific about what look you are going for. Also, include pictures of the wall, but very importantly pictures of the other parts of the room so people can get an idea of your colors and what accessories you already have. Ask a much more specific question like: How do I decorate this wall with plates?; How do I decorate this wall with family pictures?, Should I paint this wall an accent color?, etc. Also if you have items you want to use on the wall, lay them out on a table or the floor and take a picture of them. People will be able to give you much better help when they know exactly what your dilemma is.
Sorry this was the first time and well.
I updated it and got some really good ideas. I think I'm going to go with starch and fabric