Be especially careful when discussing social groups. Again, the point is not to drown you in detail, but to make your generalizations meaningful. Think about your assumptions. Historians are interested in change, and in how it happens. Problems on this front almost always detract from the content and argument, and they have to count in your grade.
Writing is a skill that can be learned and improved.
If you have trouble, do not despair. In addition, the Learning Center provides tutoring, help with papers, and other resources. You pay for this center. It can be done inadvertently, usually by taking notes directly from something you are reading. When in doubt, footnote all your references and put direct citations, even short phrases, in quotation marks.