PsdTuts has a tutorial that clearly explains how to create an advanced glow effect using Photoshop. Ideal for users who already know the tools in this program and continue to desire to know new techniques constantly (as it should be). On the other hand, is a practice that I recommend to implement their own variants that each can find, depending on your creativity and imagination.

The first is to create a nice background to work on applying various filters and layer styles to achieve something only partially illuminated. With the pen tool to draw our lines and when to get these applications to achieve their respective effects see the final result, or the option we chose.