Introductions and Conclusions 

It is common when writing early drafts to be unsure exactly what your focus will turn out to be. You gain a better sense of your purpose as you write, and a common result is that the concluding paragraph of the draft is a good statement of that purpose.

During the revision process, experienced writers look to the concluding sections of their drafts for ideas about how to revise their introductory paragraphs. In fact, writers sometimes find that with only minor changes the conclusion of their first draft can be turned into a good introduction and starting point for a second draft.