Ancient winds blew glacial silt into rolling dunes in eastern Washington and western Idaho. In this agriculturally fertile area known as the Palouse, the hills are plowed into intricate contours for planting wheat and beans. Abstract patterns and colors stretch as far as the eye can see–a perfect venue for a workshop on iPhoneography.
More and more, I travel sans computer, relying on my iPhone and iPad for storing and tweaking travel photos. I still take most photos with my Canon Powershot SX20is camera, but the iPhone increasingly serves as a second camera. Many of these Palouse photos were taken on the iPhone, and all the photos were processed in various apps on the iPad.

After Moku Hanga effect, converted to black and white in Snapseed, then added Drama filter in Snapseed

Started with two plain photos, converted one to a sketch in Photo Artista Sketch app, then merged/blended the sketch with the barn photo in Filterstorm