In this tutorial I will show you how to make a cool "starlight" object like the one below:

The first thing you need to do is make a new image 400x400, or any size you want (in this case I used 400x400) and make sure that your background color is black. Now we are going to render a lens-flare. To do this go to filter>render>lens flare, and use the settings below:

 

Now that e have a lense-flare, we are going to use the effect "radial blur" So go to filter>blur>radial blur and use the settings below:

Now you should have a nice blurred light. The next step is to duplicate your layer, and set the new layer to "color-dodge"

Now you should have an image similar to the one below:

Now I used the smudge tool to make it look like its moving, just a little smudges here and there:

Now we are going to render another lens flare, but this time in the top left corner. Use any settings you like, but make sure it produces enough light.

Now we are going to make some stars. To do this, make a new layer, and use the paint brush tool to make little white dots about your image.

Now we are going to blur the new layer, using radial blur So go to filter>blur>radial blur and use the setting below

Now you should have something like this:

And your just about dome. I added a little more touchups, using the dodge and burn tools, and then smudge tool.