For the modern photographer, Licensing represents the future of images. It’s an easy way to earn monthly income (and gain international exposure) doing what you do best. We asked some top Licensing Contributors from the 500px community about making the most of this rapidly expanding marketplace, and they offered up some of the valuable insight they’ve accrued over the years. Keep these key principles in mind, and the possibilities are endless. 1. Stock is changing Forget everything you think you…