This is a cool tutorial on creating a rain effect for your images.
The first thing you need to do is to open your image. Go to the Layers palette and duplicate the image so you won’t have to work on the original. Go to the menu bar and click Image. Go to Adjustments then Curves and adjust the settings. Put Input: 150 and Output: 60.
Now add another layer. And set the background to White. Go to the menu bar and then Filter. Choose Noise and Add noise. Click on Gaussian and monochromatic. Set the amount to 110.
Next, go back to the menu bar and click on Filter. Choose Blur then Motion blur. Set the angle to -65 and distance to 40.
Go to menu bar. Click on Image then Adjustments then Levels. Make sure that the Channel is set to RGB. Set the Input levels to 5 _ 0.25 _ 255 and Output levels to 0 _ 255 then Ok.
Go back to the Layers palette and change Mode to Screen.
And voila!
