You can also use the Zoom blur Live Filter to create a flare:
Figure 5: Add a Zoom blur Live Effect.
Note: If you apply a Gaussian Blur with the quality set to 100%, you might experience slight performance issues as you move the flare around the canvas. To prevent this from happening, turn the blur effect off in the Property inspector or add it at the end of the design process.
Download the Custom Star command, which generates basic star shapes for you. After you install the command, apply it to a rectangle object the size of your canvas, and then adjust the level properties (in the Property inspector) to change the appearance of the stars.
For more information on Fireworks, see the following articles: