I have a problem with the node editor. I have this wood material that looks to new. I would like to add a scratch texture as a new layer on top of the current wood texture. No matter how I try I can't get it to show up on top of the base texture. Where in this chain should it be put? I think I need an mixRGB node here too right?
I made a PS mockup of the the result I have vs the result I want here: