First of all, you should select a specific field in which you want to work as an advertiser or a promoter. Establishing a promotion company for a specific industry will help you in establishing your name within a few months.
Make sure you are qualified in the same field which will help you in making your promotion company a success. Your specialisation will help you in getting potential clients.
Get a business license for your promotion company which will help you in avoiding any legal restrictions in future.
Keep in touch with the latest tools and techniques that are required to stay updated with the current trends. Keep reading the latest advancements in your specific industry and adopt latest advertisement tools immediately.
Use the local newspapers, magazines and banners for advertising your promotion company. Also prepare visiting cards and drop them in the offices of your potential clients.
You should have enough money to start a promotion company as you have to meet the expenditures of the office from your own pocket in the starting months.
Make sure you have hired competent marketing individuals who can promote your company and possess skills to bring potential clients.