I used techniques developed though my earlier trial and error to produce the following. Most of the actual "glowing light" was achieved though various blending modes along with a bit of layering and liberal use of Gaussian Blur. To help get the smooth curves I used the pen tool with my tablet to get nice flowing paths then hit the check box next to simulate "pen pressure". I had a lot of fun playing around with the various settings on the brush tool, from scattering to brush direction. The amount of control that CS5 gives you is astounding. I cannot wait to do more projects with the tool, maybe look into making a few of my own brushes and seeing what else the tool is capable of.