The Naked Listener writes...
Avoid starting the conclusion paragraph with the phrase "In conclusion..." It makes for a dead-fish flavour.
Unless the piece is for some kind of academically related activity (such as an exam, which may insist on that usage), start with something more engaging like "All in all," "All things being equal," "Given the above reasons" or something along those lines.
Other than that, never introduce new ideas or new information in the conclusion. It should strictly focus on summarising or pronouncing a judgment on matters covered in the preceding paragraphs of the piece.
21 Aug 2015