text: what are the qualities of a good paragragh?   a good paragraph should have a topic sentence, supporting details, and a conclusion. the topic sentence tells what you are going to talk about. supporting details give the reader more information.  the conclusion restates what was said in the topic sentence.  a good paragraph should also have correct spelling, capitalization, and punctuation. your sentences in the paragraph should include good descriptive words and not begin with and, but, or because.