Not that much work ...
I just made 9 separate empty layers and hand-drew one position of the spark on each of them. It took about 10 minutes to draw them.
On this, I used a photo of lightning in 'screen' mode, and flipped it.
( ,
Sun 22 Sep 2002, 9:25,
archived)
On this, I used a photo of lightning in 'screen' mode, and flipped it.