What are the best techniques I could use for writing a high-standard persuasive text?

The best way is to definitely have a good hook (first paragraph) to get the reader interested in what you having to say. Also a good conclusion so the reader can reflect on what you said.

Orr ... Put your Name:Date:Hour of your class on the left hand side. Indent and start of fresh and don't give away too much info in the first paragraph. Also your added paragraphs must support your claim in the first paragraph. These body paragraphs are just to talk about or demonstrate the claim. End off with your final thoughts about the claim in your last paragraph and tell the reader that maybe for example "This is why you should try out this new product".