What Should I Not Add in Conclusion of Essay?

Writing an essay with conclusion that holds value it is very important to not include the followings below:

• Any evidence observed theory or analysis which you did not mention in the main body of the essay must not be added in the conclusion too.
• Avoid writing general phrases to conclude such as “In conclusion” for example.
• Statements that would conflict the argument and would negate the importance of such debatable topics like, “This part of the story is acceptable but the other side of it holds some bit of the truth along with it to boot” what’s the point of argument if your think both sides are equally good.