Below are some resources that may help you get started on or edit your projects. Remember, before you get started on your work, check with your instructor or your assignment guidelines to see exactly what kind of paper you're creating.
This article by Chris Anderson (and published by the Harvard Business Review) goes over how to give a compelling talk. Anderson gives special attention to presentations that are centered around a problem. This is a very informative article if you're looking to present a compelling case to your professors and your classmates.
Author Ferry Pereboom offers tips on designing an informative and aesthetically pleasing Powerpoint. The theme of the blog that hosts this article is designing effective elearning courses, so the writer is very familiar with the elements that make a good Powerpoint.
This article from Hamilton University (written jointly by Adam Polak and Jen Collins) offers an short but comprehensive overview of persuasive essay writing. If you're not quite sure what a persuasive essay should like, this may give you an idea.
As you may have guessed, an opinion essay is an essay about your opinion. This article by Grace Fleming offers some important pointers for writing effectively about your views on an issue.