Here is a step by step on making a white outline for the Star & Bar.
With (http://smm.solidmodelmemories.net/Gallery/albums/userpics/10004/normal_USN_Bar_and_Star.png)
Without (http://smm.solidmodelmemories.net/Gallery/albums/userpics/10004/normal_1024px-Roundel_of_the_USAF_svg.png)
Lou
Here is the complete method I use to make a white outline to the Star & Bar. I then cut out the outline and it leaves an accurate outline. Check out my Buckeye photos at http://smm.solidmodelmemories.net/SMF/index.php?topic=1565.msg16642#msg16642