There is no need to worry about writing your advertising paper anymore
Writing an advertising paper is all about considering things that seem to be obvious, and doing it in depth. Everyone thinks he understands advertising. If you want to look at advertising in an academic context, though, you have to bring a little more to the table than the words you saw on a billboard. Fortunately, there's so much depth to good advertising that writing advertising papers is highly rewarding.
Of course. Most people see ads as a superficial business, "Buy soft drinks!". They fail to consider the millions, sometimes billions of dollars that go into ads. When people spend that much money on something, they also spend a lot of thought. As a result, over the last century advertising has evolved from a simple craft into a sophisticated art with its own cast of symbols, characters, and legends.
Your paper will be the best one among other advertising papers in your class
Over the years, advertisers have taken simple elements like the photograph and learned to imbue them with the kind of meaning that the classical painters of yore had invented. The advertisers proceeded to advance these techniques and ideas to the point that appreciating their "art" was within the reach of every man, woman, and child on the planet. Sure, advertisers aren't looking to comment on social issues (except when they can be used to sell a shampoo) but a modern fashion spread has every bit as much thought poured into it as a Rembrandt.
Assuming you've grown up in a first-world country, you have been exposed to plenty of advertising already. Pick a facet that interests you: billboards, commercials, video games, and magazine ads are all common topics for advertising papers. If you want to look at something a little more unusual, guerrilla advertising can be a hilarious topic. Lastly, you don't even have to limit yourself to one form at all. The use of words, colors, or symbols can make an advertising paper read like a literature one.