hi everyone trying to decide what wall paper to use in my powder room. It's quite a small room 2m x 1m and 2.6m high. Thinking of doing all 3 walls. I have attached some wallpaper designs that I like. The last one which has quite a busy design - its difficult to see but its basically a brownish grey background with almost a duck egg print. Also should i do all 4 walls - some say we should tile the wall behind the toilet?