Here is a GIMP Vintage Editing Tutorial. More will be coming on different vintage styles. This one mainly focuses on light leaks. Hope it's helpful to you!My other GIMP Tutorials:GIMP Photo Editing TutorialGIMP Editing Tutorial 2GIMP Photo Editing Tutorial #3P.S. It comes with proof reading this time
I believe you can download the Add Film Grain
plugin I used here
(I'm hoping it's the one I used).
Thanks to `faestock
for providing the stock image!Photos edited with this technique:
If you have your own, leave me a comment and I'll add it!