I'm really struggling with Rendering and materials. I used to be pretty good at it in V14 before the material editor radically changed but now its taking lots and lots of time to get to any kind of speed or even get my head round how it works. Im way behind in learning terms all over again so a bit of advise would be greatly welcomed. Its a drawing of a tiled bathroom and try as I might I just can't get it to look right at all. all the files uploaded for drawing.