The podcast artwork that tends to stand out the most at a small scale in iTunes is usually either a graphic or illustration. However, it was important that the presenters' faces were in the artwork, so I worked on the contrast of the photos I'd been sent and turned them into a graphic, similar to the sort of thing you might use for screen printing.
I was inspired by the style of public information posters and Penguin paperback fiction books from the '60s and '70s, so worked on an idea around that.
The FInal design in the iPhone app
Designs for social media