If you followed this tutorial to the letter, you'll have five snow layer sets named (in order of farthest to closest): - Snow copy 2 - Snow copy - Snow - Snow copy 3 - Snow copy 4Use Filter -> Blur -> Motion Blur on the snow content layers within each layer set to increase the suggestion of movement and to better integrate the snow into the image. Using larger distance values for motion blur makes a layer more transparent. Since the flakes in the far layers are smaller, youll want to blur them less so they wont disappear. Youll also want to use different Motion Blur angles for each layer to add to the random appearance. These are the only rules of thumb for using Motion Blur on the snow. Below are the values I used. Play around with them until you find something you like. - Snow copy 2, Angle: -70 degrees, Distance: 1 pixels - Snow copy, Angle: 70 degrees, Distance: 5 pixels - Snow, Angle: 90 degrees, Distance: 10 pixels - Snow copy 3, Angle: 80 degrees, Distance: 30 pixels - Snow copy 4, Angle: -80 degrees, Distance: 60 pixelsUsing these values produce an image that looks like this: