These are the people who design the ads. Inclination towards artistic creative and a great deal of imagination are needed to perform well in this field. Media Media people plan schedules and campaigns. They also co-ordinate between the ad agency and the media ie. T.V. Channels, newspapers, magazines, etc.
Most ad agencies have market research wings to keep a tab on the pulse of the audience.
If you think that your face and body will suit this profession, then get your portfolio shot and contact top modelling agencies ad co-ordiantors for assignments. Do keep in mind that modelling demands oodles of stamina to endure long hours and tough schedules. Production jobs For T.V. commercials, a number of technical experts are required. These include ad directors, editors, special effects experts, animation experts etc. etc. If you have the qualifications to match, you can opt for one of these.