A quick google search gave me these two tutorials, second one builds on the technique explained in the first: http://www.photoshopcafe.com/tutorials/lightning/

A quick google search gave me these two tutorials, second one builds on the technique explained in the first: http://www.photoshopcafe.com/tutorials/lightning/lightning.htm http://www.photoshopcafe.com/tutorials/lightning/lightning.h... http://tutorialblog.org/lightning/ http://tutorialblog.org/lightning/