Extract from writer's comments on advertising at
http://www.planetbods.org/theshed/randomwritings/howto/adverts.live

How To... Make TV Adverts Without Really Trying

Getting Started

Beware! Imitate! Don't innovate! Clients aren't interested your ideas. The only things they care about is patronising their potential customers enough to flog them enough of their product.

Further inspiration can be found by watching digital television channels which have several hundred different types of advert, all of which are cheap and exactly the same.
So get out there and put your new found knowledge to work!