To date I've been making walls and then adding a xpack texture to them to create some signage along the side of my track project. Coca Cola for example. My concern is that when I've been doing that it covers a whole side of a wall for the whole length of the wall. In order to create some space on the same wall do I need to? a) make some adjustment that I'm not aware of when changing wall textures? Can you add a texture to a part of a wall? Or space it? b) break the walls up so that along the same stretch of road I have one wall with a texture/signage. Another wall blank. And then on a third wall puy a different texture/signage and so on? c) Or should I be making a ultra thin "wall" and placing it as close to the real wall as possible? So that I can put the signs where I'd like? What do you guys say?