1) First paragraph should include a thesis statement, which is the last swnstense in that paragraph and describe all 3 reasons, that are gonna be described in other 3 paragraphs.
2) Paragraph 2,3 and 4 are the reasons that proof your point of view and each of the paragraph has to have mini thesis sentence.
3) Conclusion is the 5th paragraph where you use clincher as the last sentence.
Everything should be in the same form and tense (for example all verbs are infinitives)
It’s 3 pages (5 paragraphs) essay, not more.