Judicial clerkships are unique positions with a different type of application process. Since etiquette often deems that you should say yes to the first judge who offers you a clerkship position unless you have a very good reason to decline, it is better to carefully select the judges you wish to clerk for rather than simply sending out a mass mailing. Also, judges have very different opinions on what the law is and how it should be applied, and you will help author the judge's opinions, so it is important to research these differences beforehand as well. The Law Library has a number of resources, both electronic and in print, to assist you with this research.
Guides and handouts from the Writing Center at Georgetown Law can assist with job searching and judicial writing. Please visit the Writing Center's website for the most recent updates.