If you want to animate these I suggest doing the lines first and altering a copy of the line shape in a new layer [see the animation tutorial for this]. Animate the shape roughly and not too similar. After creating a few variations of the lightning strike, start with the conversion to paths.
It’s a lot easier to adjust a few nodes on a line than twice that many or more in a shape.
I hope this quick tutorial is helpful to some.
Get the source art
(svg file) of this tutorial for free!