Answer:
First, you start off with a topic sentence. Then, you give supporting details. A paragraph consists of 5-7 sentences. Always end in, "In conclusion..." For example:
My favorite TV show is Cold Case. I love this show because the LAPD solves important murder cases and brings justice to citizens. I enjoy watching this show because it is extremely unpredictable. For instance, the murderer always ends up being the person whom you least expected it to be, which adds a huge twist to the entire plot. In conclusion, Cold Case is a magnificent TV show.