Conclusion:

Line 12: Restate your thesis statement (In conclusion, this essay has discussed …)

Line 13: Add your opinion (In my opinion, …)

Example:

Thesis:

Line 3: This essay will discuss the advantages and disadvantages of advertising and explain why it should not be used in public schools.

Conclusion:

Line 12: In conclusion, this essay has argued the benefits and detriments of advertising in public schools.

Line 13: In my opinion, schools should not use advertising because safeguarding children should be more important than making money.