I did all of the wallpapers in my house by myself and when I went to make a new design I just did it over the ones on the wall and now my wall is a cobblestone path. Is there a way to like save the one that's on my wall then replace it with another without changing the original one? I don't know if I'm explaining this very well but if you don't understand me just say so and I'll try to be more understandable.
Nope, once you have a pattern on the ground as a path or on your walls, it has to stay in your patterns. You just have to have more characters to hold more.