There are a few things you can do to make particles light in Photoshop. One is to use the " Luminosity" command. This command will give you a slider that you can use to control the amount of light that is given to each particle. Another thing you can do is to use the " Filter" command. This command will allow you to change the color of each particle. Finally, you can use the " Layer Mask" command to create a mask that will only let certain particles through.