My Opel Blitz from Tamiya in 1/35 was published in 256 issue of Euromodelismo.
Random black, brown, grey, and silver washes as a base for weathered wood.
Wood grain painted using AK wood set.
Sealed with gloss varnish.
Salt, and hairspray was sprayed over it. Base colour followed.
More salt, and more hairspray.
After more salr highlights, and shadows were sprayed, then the salt was removed.