Today we are going to learn how to add rain to a photograph by using a texture!
I am going to use this photo
You can use this photo or one of your own. You can download this photo here
Open photo in photoshop
The next step is to add a rain texture, Here is one I made....
Next open the rain texture in photoshop, ]
the photo will be your background layer
The texture will be layer 1 , copy layer1 by hitting Control/J
Change the blending mode of layer 1 to Linear Light
Change the blending mode of layer 2 to Vivid Light or Soft Light
( it also helps to nudge Layer 2 just a fraction right or left!
Your result should look like this!