Electrifying Energy Beams

Here's a great effect that will bring some energy to your subject. We'll be wrapping this singer's arm with a glowing beam of light, adding sparkles, and adjusting the colors to make it all seem magical.

Firstly, create a new layer, then grab your Pen Tool (P) and draw out a spiraling path, as if you have a snake wrapped around the arm...

from luxa.org