Whenever possible, choose a topic that you feel passionate about. Writing about something you enjoy certainly shows in the final product, making it more likely that you will be successful writing a paper about something you enjoy.
Although it is tempting to simply read over your essay and use the spell-check tool, editing your paper should be a bit more in-depth. Have at least one, but preferably two or more, person/people look over your essay. Have them edit for basic grammatical and spelling errors as well as the persuasiveness of your essay and the flow and form of your paper.
There is no secret that you will not be able to write a good insightful research paper if you are not interested in the subject overall and in the topic in particular. If on the other hand the topic is linked to the field of your interest, you may consider yourself lucky. It would be easier to explore the theme and write about it. You may even find some additional resources on your computer or I cloud service for the topic, which excites you. If you enjoy science, you are sure to talk non-stop about it. The same goes for writing.
Avoid using many long, direct quotes. Although your paper is based on research, the point is for you to present your own ideas. Unless the quote you intend on using is absolutely necessary, try paraphrasing and analyzing it in your own words instead.