You will not find a silver bullet for success when it comes to starting an online advertising agency. However, there are some key things you can do to increase your chances for success. First and foremost, you need to be able to identify your target market and understand their needs. Secondly, you need to create a strong value proposition that resonates with your target market. Finally, you need to have a solid plan in place for how you will acquire and retain customers. If you can do these things, you will be well on your way to starting a successful online advertising agency.