1) Open up a new image thats 500/500
2) Hit "D" to reset your colors
3) Go to Filter>Render>Clouds
4) Then go to Filter>Artistic>Poster Edges with the settings...
Thickness: 2
Intensity: 1
Posterize: 2
5) Then go to Filter>Blur>Motion Blur... set your distance to 999, then change your angle to whatever you like best
this concludes my line effect tut... if you want to add more flare you can spice it up with color by going to Image>Adjustments>Hue/Sat and change the color to what ever you want... heres what i ended up with...

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