waedoo, check out artem's badboy tutorial - http://www.artemstudios.com/08Portfolio/Tutorial/MaterialRenderingTut.htm awesome material for highres rendering.
if you can please link to tutorials, advice, and insight on 3d environmental art. The tutorial that helped me with this was https://youtu.be/5pi1MxqpmKw
This texture was made for my new tutorial of digital painting, what do U think about it ? (the tutorial is avaible here : http://kevinguegan.com/tuto-texture-paves-repetables-12-etapes/)