1) Introduction - general facts narrowing down to thesis statement (= last sentence with point you want to "prove"/support in the next paragraphs) - Everyone loves pets. (Most people have one: a pet. Dogs and cats are both popular. Dogs are fun ... However, cats make better pets than dogs)
2) Supporting paragraph 1 - Linking word (First of all, ...) & Argument/Point; Explain; Example (First of all, cats are low maintenance pets.)
3) Supporting paragraph 2 - Linking word (First of all, ...) & Argument/Point; Explain; Example (Moreover, cats keep pests at bay.)
4) Supporting paragraph 3 - Linking word (First of all, ...) & Argument/Point; Explain; Example (Last but not least, cats are perfectly content indoors)
5) Conclusion - sum up arguments (1 sentence per argument) OR give the most convincing argument mentioned above. End by proving your thesis statement. (Pets give us a lot of pleasure, but as we all have busy lives, we want them to be fun, low maintenance and useful. Therefore cats make better pets than dogs.)