I can't really give you a paragraph to copy from, 'cause in my opinion that's cheating but...I can be of help. Listen there is a lot more to an essay than a few words. Or two sentences. Learn to be a great writer while you're young so you don't have to learn it the hard way. Anyways an important thing this essay needs is an opening. I'll organize down below.
Opening/Introduction
-Hook
Something to grab the readers attention. Like a fact, general statement, a misrepresented general statement, and if you really wanted to a question (although I don't recommend using a question, and if you do do a question, don't make it stupid)
Introduce your topic sentence or introduce your format and your topic(s) Or a Thesis statement.
Sometimes saying the format that you're going to write in is something that helps your reader to understand more easily. Introducing your topics along with with the format can be sort of frustrating, but try to make it sound smooth if you do that.
Also just introducing your topic sentence smoothly and nicely is good enough.
Okay so sometimes you need to do
-Hook
-Introduce topics (you can introduce your format here too)
-Thesis Statement
-Introduce Format (you can do it with your introduce topics part)
Paragraphs
Introduce certain reason (topic sentence)
Your reason why, since it's an opinion essay.
Give a clarifying statement. Clarify why this is your reason, elaborate upon that.
Give textual evidence why this is your reason, why this is that and that is this.
Elaborate/Clarify your textual evidence, when elaborating upon textual, support the evidence with your own words, make it sound good. Or make it more clear, state it in your own words.
Conclusion
Wrap up your paragraphs all into one or two sentences. Then leave a lingering touch of your own like, "What is your opinion? Should Middle Schoolers have their own bed time?" Or something with more drama, (;
Anyways hopefully this helps you out, if not well then good luck!