More to explore:
The Scientific Seamstress: Folding Templates (free download)! (Templates for folding hems that are straight or curved.)
Brilliant! A free printable folding guide for all your sewinghttp://pinterest.com/pin/50595195783323145/# needs :)
This is Genius! Pressing templates. "Free Download of a Folding Template. What a clever woman to think of this! And how awesome that she is sharing it!"
Free Printable Folding Template by Scientific Seamstress - genius