Wanna change a scene from no rain to a really rainy one.
Wanna learn how to use Post FX brushes? Here is a vid explaining how to use techniques on how to get what you want. How to use them and how to have fun with them.
In this vid we will learn how to use Photoshop brushes, also can be used in gimp. You can use any brushes you like. I really like Rons brushes as they are awesome.
Here are the links to the Brushes:
https://www.daz3d.com/deviney
hope this helps and enjoy:)