This tutorial shows how easy it is to add the effect of fake snow to a photo using the free pixel-based image editor GIMP. I recently added a tutorial showing how to add fake rain to a photo using GIMP and I thought that demonstrating a technique for fake snow might be useful for winter photos.
Ideally, you'll have a photo of a scene with snow on the ground, but it isn't essential. Snow isn't very common in our part of western Spain, but I did get a shot of snow on an olive tree earlier this year, which I with use to demonstrate this technique.
You can see the finished effect on this page and the following pages show you the simple steps needed to reach a similar result.