I have landed writing gigs by cold calling advertising and marketing agencies listed in the phone book. I called dozens of companies until I found one that was willing to give me a chance. At the time, I had samples of advertisements that I’d written. If I did not have samples, I would have made some up (telling the company that they were made-up samples, of course). For example, if I saw an ad for a fitness writer, and I didn’t have any examples of fitness writing, I’d get to work writing some! Good writers are versatile. You may not have all of the answers, but you know how to research and communicate thoughts.