Stone Wall Painted texture. Not done by me though, inspiring
Show your hand painted stuff, pls! - Page 13 - Polycount Forum
ArtStation - Hand Painted Textures, Ulrick Wery
Another hand painted metal texture. Really well done with it looking very worn and the use of bolts etc. I like it because the colour is more of a brassy colour rather than the usual grey/blue hue.
The Hero's Lodge: A hand-painted bananza - Polycount Forum
My dive in to hand painted texture work. - Polycount Forum
These cracks will be used to add some realism to the cave walls. The cracks can also act as a damaging effect.
Hand Painted Textures, Ulrick Wery on ArtStation at https://www.artstation.com/artwork/hand-painted-textures-60071450-7b25-418f-9d95-46dec3351949