Nothing will serve your job search better than your own passion. No tool will do more to advance your career than the sense that this is where you really belong. If you let it, that attitude will invariably express itself, whether in resumes, cover letters or interviews.
True passion is a very hard thing to fake.
When it’s real, however, and you’re truly passionate and legitimately engaged, people notice. Once they notice, they respond. Your next task is to find ways to make sure that the response you want is the one you get.