Here is a quick overlook about how to build up your texture.
If you are not a well experienced texture artist, but love hard surface, here is a few quick tips, how to enhance your model.
Hope you can find it useful!
Cheers
If you are not a well experienced texture artist, but love hard surface, here is a few quick tips, how to enhance your model.
Use your render engine and render out some passes what you willing to use. Tri-planar or box mapping is a fitting solution. In this case , raw metal and two coat colour variations.
First, your overall colour / shader.
Define many colour variations
Add your first / bigger level of edge damages, and raw metal areas.
Refine your damages with smaller break-up, define the overall scale with your smallest details.
its a hard surface, cannot be over scratched, but surely add some heavy, good readable damages. Be careful with scaling.
Sun, rain, wind can affect painted surfaces. Use colour to define side / smeared areas and dirty, merged sections.
Add subtle surface details, like smaller, thinner scratches, damages. Can be use any metal texture on top. also take care about the scale.
Surface dirt, add roughness to the surface.
Rust, for sure. Where dirt lives, rust starts to grow.
where you have rust / dirt, leaks also appearing.
Use such as many addition, but never overpower them. Keep it subtle. Lets see it together.
Ambient Occlusion is a useful PASS to blend surfaces more together. Also keep it subtle.
Finally, add some tiny help to the merged surfaces such as edge moving and hard/sharp dirt. It helps a lot to loose CGI / sharp edges.