A research paper is an expanded essay that presents your own interpretation or evaluation or argument. When you write an essay, you use everything that you personally know and have thought about a subject. When you write a research paper you build upon what you know about the subject and make a deliberate attempt to find out what experts know. A research paper involves surveying a field of knowledge in order to find the best possible information in that field. And that survey can be orderly and focused, if you know how to approach it. Do not worry--you would not get lost in a sea of sources.
You need to understand completely that you are not writing a descriptive essay. A research paper is an accurate and thorough work, which is based on facts details. You cannot add watery text about anything into the paper. Your statement should be supported with examples or reference other profound research and academical works.
If you are writing a research paper for a class, consider the other students. Is it likely that they will also be writing about your topic? How can you keep your paper unique and interesting if everyone is writing about the same thing?
The body of your essay will revolve around the ideas that you judge to be most important. Go through your research and annotations to determine what points are the most pivotal in your argument or presentation of information. What ideas can you write whole paragraphs about? Which ideas to you have plenty of firm facts and research to back with evidence? Write your main points down on paper, and then organize the related research under each.