Getting the perfect crop or symmetrical shot isn't easy, but photographer Pei Ketron has it down to a science. The Instagram user (pketron) has more than 834,000 followers.
"In order to capture the symmetry in a scene, you have to center yourself, make sure all your lines are straight, and be a perfectionist when it comes to your square crop . . . Sometimes I'm in a hurry or I just don't get it quite straight and I need to use an app like PS Express . . ."
Download our new Selfie app!