To create a good ad, you will need a good platform to spring off of. What is the platform for an advertisement? The platform is the headline. Headlines is the most important thing that will catch the reader's attention when the first time they open your page. Why are headlines so important? Why do you think, marketers spend so much time just to writing them, re-writing them, testing them, and tweaking them? The answer is simple. That's because the headline is the premise of the entire ad.