You should have a conclusion, but it may also be brief. You should sum up the conclusion of your argument, and perhaps discuss the implications of that conclusion. Writing Writing style and good format allow the reader to follow your argument more easily. Edit your papers carefully for careless errors. Follow these format requirements.
Long papers indicate an organizational problem.
Don't be too timid - you're expected to make a definite claim in your thesis. Just be sure you can support it with evidence from your research. Avoid sexist language. Check your text for grammar and spelling, punctuation and contractions. Periods and commas go inside quotation marks.