This tutorial will you how to create a nice glow effect as well make it appear as if the glow is wrapping around an object.
To begin this effect we'll need an object to wrap around, start by opening some image. I'll be using a picture of "The Cult" off of Deviant Art. Select your pen tool and have it set to "paths" (press "p" on the keyboard).
This video shows the basics of the pen tool and how it can be used. Warning: This is only the basics and does not touch on the more complex functions.