Step 1
First off, let’s start by creating a new document and applying the oh-so-obligatory clouds (Filter > Render > Clouds).
Step 2
Now that we have our base to work with, apply Mezzotint (Filter > Pixelate > Mezzotint) with type “Long Strokes.”
Step 3
Doesn’t look like much right now, but with the magic of motion blur (Filter > [...]