Design an Advertisement to run on a large led screen

need to design an advertisement to run on a large led screen exceeding not more than 15secs or an average running period the advertisement should be very creative, eye catching and effective there is currently no name or any such details to put into the advertisements would like to see examples of your previous works in this field the designer whom i award this project will be hired generate our clients ads to our business the project frequency may vary from monthly / weekly / quarterly / half yearly / yearly thanks mj