Amazing Brushes

EXPLORE THE BRUSH TOOLS

1. Create a new photoshop document of height: 200px Width: 400px. 
2. Make your main colour on your pallete black and fill background layer.
3. Create a new layer over that.
4. Go to brushes and make sure it is on airbrush (has soft edges). Change the pen weight to 9.
5. Paint a single dot towards the left of the image. 
6. Go to Filter > Stylise > Wind.
7. Repeat this five times times, or press [CTRL F] five times.
8. Go to Filter > Blur > Motion blur. Set Angle to 0 and Distance to 25 pixels.
9. Press Edit > Free Transform or CTRL T and rotate so that the rain drop is about 70 degrees to the ground plane.
10. Press Ctrl + I to inverse the image. 
11. Press Ctrl + A to select the entire image.
11. Go to Edit > Define Brush Preset.
12. You now have a raindrop brush.

Adding an effect to the background

Now go back to the image. We need to prepare the background and either make it blurred or give it a light texture. For this particular picture, we will make a very simple rain effect. 

1. Make a new layer above the picture.
2. Go to Filter > Render > Clouds.
3. Go to Filter > Noise > Add Noise.
4. Go to Filter > Blur > Motion blur.
5. Turn the blend mode to 'vivid light'.
6. Take the opacity down to 30%.

Now we add the rain onto the image.

1. Go to the Brush Tool and look for the rain brush you created before in the Brush Palette.
2. Select Shape Dynamics in the Brush Palette. 
3. First lets begin with the midground rain. 
Under the Brush Presets Tab, change the master diametre of the brush to 90.
In the Shape Dynamics tab, change the Size Jitter to 50% and Angle Jitter to 1%
In the Scattering tab, change the Scatter: 1000%
Brush all of that on as desired.
Then turn the layer opacity to 50.
6. Next is the foreground rain. Change the master diametre of the brush to 180-250.
Size Jitter: 100%
Angle Jitter: 1%
Scatter: 1000%
Brush that on as desired.

And there you have it!