This model, made by Saul Kruzz, was textured by me as a part of a tutorial that I have written. It's 100% procedural in Blender. No images allowed :). The model and texture is free to use as you wish and so is the tutorial that you can reach here:
https://docs.google.com/document/d/1fWaorEppgDpnP08XbTKipR7S0JdARZgoMI9ApmCmBa4/edit?usp=sharing