Heidi Klum wasn’t an overnight success. “After [winning a German modeling contest], I thought, ‘This is my ticket. Things will happen.’ But they didn’t,” the Teutonic temptress tells Page Six Magazine, which will be inside The Post on Thursday. “I could never book a job. I was walking around New York for three or four years,” Klum recalls. Then, Page Six spotted her at a Victoria’s Secret show, dubbed her “The Body,” and the rest was history.