I decided to try to create a filter similar to fine rain and that's what happened! Instructions on how to add a filter to the Filters menu at the top are in the file.
This filter adds a glow to your objects. Instructions for adding a filter to the Filters menu at the top are in the file.
This filter "ages" your image. I recommend applying it only to images. Instructions for adding a filter to the Filters menu at the top are in the file.