The first thing you need to do is recreate the type. As the Lucasfilm logo is a 'hand rendered' logotype, it's not going to be easy to find an exact match for the typeface. I used Clarendon Condensed (then condensed it some more) to make this overlay. Use the best match you can. So far it's looking pretty ropey, but hopefully it'll get better. Depending on the amount of letters your company name has depends on how close to the original this will look.