Casetify's personalized phone cases are endorsed by celebrities like Kylie Jenner, and the Hong Kong-based company partners with global brands like Disney and NASA, but success wasn't always easy. Here's how millennials Wesley Ng and Ronald Yeung turned Instagram photos into a company bringing in $300 million a year. Produced by: Lauren Shamo Supervising Producer: Jessica Leibowitz Camera: James Goldman Animator: Elham Ataeiazar Reporter: Thomas Huddleston Subscribe to CNBC Make It: http://cnb.cx/2kxl2rf About CNBC Make It: CNBC Make It is a new section of CNBC dedicated to making you smarter about managing your business, career, and money. Connect with CNBC Make It. Online Get the latest updates: https://www.cnbc.com/make-it Find CNBC Make It. on Facebook: https://cnb.cx/LikeCNBCMakeIt  Find CNBC Make It. on Twitter: https://cnb.cx/FollowCNBCMakeIt  Find CNBC Make It. on Instagram: https://bit.ly/InstagramCNBCMakeIt #CNBC #CNBCMakeIt How Casetify Built A $300 Million Tech Accessory Brand