I am working in plastic building materials, and now a day, it seems that there is not line among material types. Wood, plastic, cement.... all can replace each other. For example, when you want a wood floor, you can choose natural wood. You also can choose wooden plastic panel. You even can have a the choice of cement floor with wooden art. 

So what will architecture designer do when there is no line among material types? I think, let's start your designs with suitable materials avaiable around you. Just let's it look as much nature as it can.