Joshua likes to work on location, doing plein air painting as much as possible. The larger works on canvas are painted in the studio, usually from an on-site oil sketch. He is inspired by things remote, effects transitory, and the artistic adrenaline generated by travel. He is generally mystified by painters who set up next to their car on busy roads. That doesn't work for him, nor does having an audience. Along with sausage and legislation, Joshua would add landscape painting to the list of things that one shouldn't watch being made.
For influences and inspiration he lists the Hudson River School Artists, particulartly Church and Gifford, finding outdoor oil sketches to be sublime, more consistently successful than their large scale studio paintings. Another hero is Casoar David Friedrich, someone who in modern parlance Joshua would describe as "a freak with major skills".