This tutorial by Milly shows you how to make sure your glass cutting lines are actually straight. I tend to stick to curve shapes just to avoid the dreaded straight cut. You can see a video tutorial over on her blog here.
First things first you will need a ruler, who here tries to cut without using one? Um just me ? Oops okay.
Even if you have been creating stained glass pieces for sometime , I highly suggest checking out this video for little tips and tricks.