Change a blend mode, play with a filter ..... anything goes as "ART"
But most of all,have fun!
My submission consists of two photos I took in northern Nevada. There two tanks are used as "head tanks" supplying water for the ranchers in the valley. One of the tanks seems to be an old boiler pressure vessel. The other is an old rail tender car. Mountain stream water fills the tanks situated in the foothills above the valley.
I think it's pretty ingenious. Nik HDR Efex Pro 2 used.