When trying to write a Thesis paper you need to have done your research fully. This does not mean just read one source. Many thesis require you to use at least 3-5 sources. You next need to come up with your thesis statement. You statement should have your main point as well as 3 key points to back up your point. Each paragraph should bring up each point and describe it in detail. Then the last paragraph should tie it all up together. While writing anytime you quote words or thoughts or ideas that you got from another source make sure you cite it.