[header] How to sell an advertising idea [title] Build up a credible track record. [step] You will achieve the most success with your advertising ideas if you have already established your ability to think strategically and execute creative ideas. When clients or agencies are judging ideas, they are also gauging you. 
[title] Establish a partnership with a credible person, if you have not yet established your track record. [step] Find someone senior to you who is willing to hear your pitch and give you some credit.