1) Create a new document with the dimensions of 1024x768, with a black background.. From this we will now create the basic structure of the lighting effect. Now take the brush tool and draw a thin straight line, and add a glow to it by adding another line over it with a flow of about 10@ or 20%. Or whatever you think looks best. My line is a 1 pixel line with a 13 pixel glow and a flow of 18%. (ma