Quote from the0rthopaedicsurgeoni made a texture for a suzuki carry kei truck i finished a while ago.i forgot about logos and text when i unwrapped it and had the whole texture flipped down the middle. i was going to do those with decals, but is it better to put those in a separate texture or in the same one with an alpha channel just for those parts?
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Thta metal looks like concrete, I'd say to remove all the subtle noise and have a pretty clean surface instead. Car paint doesn't age like that ![]()
If you want grime add it only where it would build up in real life (corners, concave areas, etc)