In order to write a great paper, you need three elements: a thesis, strong supporting points, and a conclusion.
The first part of a successful paper is to have a good thesis. A thesis is the main point of your paper. Moreover, a thesis is debatable. So, if you are writing on the environment, then a good thesis is that there is global warming due to fossil fuels.
The second part of the paper is the supporting points. So, in this section what you want to do is to support your thesis. Tell the reads why your thesis is a good one.
Finally, you need a conclusion. This is the part of the paper where you wrap things up and tell readers why they should consider and even believe in your thesis.