I'll also suggest checking out the wiki, either multi texturing and/or trim sheets: https://polycount.com/discussion/174377/witcher-3-blood-and-wine-architectural-material/p1 https://polycount.com/discussion/210492/tutorial-trim-textures-for-environment-art-and-props
@sacboi thanks for your help on this! Never used trim sheets but it does seem like they would be a good approach for what I am trying to create. Will check out those links, much appreciated!