Essays are a really important part of your grade so it’s really important you make sure each essay you write is the best that you got. You need a good thesis, good supporting reasons and a good sentence structure. If you don't do these things your essay will probably get a bad grade. You don't want that, since they are such a big part of your grade. Make sure that for every piece of evidence you get from somewhere else or from someone else you site it or your essay will get a zero. The works cited is a very important part of your essay.