The diffuse feels a bit noisy - I wounder if you can't remove some of the high-frequency changes from the diffuse and rely upon the normal map to provide the details. The weathering feels a bit generic. Try to show where dirt and grime would accumulate, and how streams of water would cause the dirt to leave streaks. If you…
This is my original reference image from an Elder Scrolls Online screenshot. I totally agree on letting the normal map get a little louder and taking noise off the diffuse. I have tried a few ways of producing the weathered water drip effect but it always seems lackluster and unrealistic in the end. I take a custom linear…