split this paper up into sections, including an introduction, a conclusion, and then other sections in between that make sense, so that your paper has more structure.
Once you have done this, you will need to add a little bit at the end of introduction describing the purpose of the paper and summarizing what the rest of the paper will look like. This is something that is normal to include in the introduction.
Also make sure that you connect back to the purpose of your paper (as stated in your introduction) in the conclusion. You might also need to improve your transitions between sections once you add them, but that should not require a lot of new wording.
