If you have the chance to do research on an angel, which almost every single time you will. Whether raising money from a restaurateur, ok what type of restaurants do they like? what type of food do they like? Are there talk with them at conferences? Watch those talks, read their white papers, look at what they invested in on crunch space. See if you can learn anything about their family. Do their kids go to a private school or college or something like that? Do you have anything in common with any of them? If you can find that stuff and tailor your pitch to them and create and actually personal connection with them.