Rebel/Imperial insignias

[CloneF13Y35]

I am looking for decent sized images of the Rebel Alliance and Imperial insignias to use in some fan art I have in mind.  Prefereably, what I'd like would be big enough to add to an 8x10 sized imaged. most images I've found are way too small to use that big. Any assistance would be hot.
 

[Angry Ewok]

If someone is unable to help, I suggest you take the Imperial Emblem into Adobe Illustrator, and use the tools to trace out a page-sized emblem... Then you can print it out or whatever.

Be sure to show us what you've done once you've finished!