If you're looking for the easiest way to cut your jean hems, this is the tried and true process that I have used on every pair of jeans I cut.
HOW TO: FRAYED DENIM JEANS (DIY)
How to Hem Your Jeans (in 4 Easy Steps!) - A Beautiful Mess
5 Ways to DIY The Biggest Jean Trends! - A Beautiful Mess
DIY: How To Cut The Hem Off Jeans - Red White & Denim
How to Cut Jeans: Shortening, Fraying, and Making Cut-Offs
DIY RAW HEM
How To Hem Your Jeans At Home For Free - an indigo day
How to Hem Jeans While Keeping Original Hem
DIY: How to Cut the Hem of Your Jeans - Crystalin Marie
DIY: Frayed Hem Jeans - Crossroads
DIY: How To Cut The Hem Off Jeans - Red White & Denim