To keep the presentation from being boring or one-sided, it's important to get the audience interested in what you're speaking about. One way to do this is by asking questions that relate to it. For example, if you're talking about urban homelessness and its link to a lack of decent employment in the city, you can ask the audience some possible suggestions to solve this problem. Another idea is to take comments from the audience after your presentation for a more meaningful discussion on the topic.
Another useful method of presenting a paper is choosing a topic that hasn't been overstudied by many scholars. For example, you may decide to present a paper on recent waves of Asian and African immigration to European nations France and Spain and what effect this is having on not just those countries but on Europe as a whole. Or you can discuss England's increasing Muslim population and what this means for anti-terrorism efforts in the Western world.
Because the purpose of a presentation is to give a detailed account of your research, it's important to critically discuss your topic rather than summarize it. You want to talk about some recurring themes that stand out from your research and how these themes contribute to the larger issue at hand. If you're discussing the plight of street children in urban Brazil, connect this to the larger problems of unemployment, racism, globalization and the country's class divisions.