In longer essays, you can end the introduction by briefly describing what will be covered in each part of the essay. This guides the reader through your structure and gives a preview of how your argument will develop.
If you realize that you`re falling dangerously behind schedule, it might be necessary to cut some arguments or examples you planned to include. Although making these omissions can be painful, it`s better to leave out a few points from one section than to leave out an entire paragraph because you ran out of time.
Therefore, if you take the time to review your notes and ensure you understand everything that was discussed, it should be difficult for the essay question to catch you off guard. As soon as you read the question, relevant course concepts will start popping into your head, and you`ll just have to organize them into a coherent essay.
For this reason, it can be helpful to simulate the conditions of a timed exam before the actual day: pick a practice question, find some lined paper, set a stopwatch, and see how you do!
Unless if you finished way ahead of schedule, don`t worry about major revisions like reorganizing the structure of the essay–it`s better to hand in an essay with an imperfect structure than a paper that`s impossible to follow because you had to stop halfway through the revision process.
If you have enough time left over, read your essay again and make corrections. When you`re working under time pressure, it`s easy to make grammar mistakes or produce hard-to-follow sentences; the final few minutes are your chance to clean up those errors.