Essay

Organization

¶ 1: Introductory Paragraph

- Short Introduction (if you have time)

- Thesis or argument

¶ 2: Body Paragraph

- Main Point

- (Argument, if appropriate)

- Example(s)

¶ 3: Body Paragraph

- Main Point

- (Argument, if appropriate)

- Example(s)

¶ 4: Conclusion

- A summary of the essay

- Use synonyms (or synonymous phrases) and briefly touch on your previous examples if necessary.

- Wrap it up!

Grammar

The same grammatical rules that we follow in the Sentence Improvement, Identify Sentence Error, and Paragraph Improvement portions apply in the essay section. 

Length

Write as much as you can! Read this article if you don't believe me. To the best of my knowledge, the same rule applies today as it did in 2005.

Sentence Fluency

Try varying the length and structure of your sentences so that your essay sounds less clunky -- like this. See?

Vocabulary

While its true that you need not apply ten-dollar words and esoteric terminology, knowing more words would allow you to express yourself better and write faster.

Content and Depth

Content and depth is not that important. However, do stay on topic and avoid invoking hackneyed or irrelevant examples and making utterly asinine arguments.

For your information, Albert Einstein, spelled E-I-N-S-T-E-I-N, did not invent the light bulb. Furthermore, whether Thomas Edison invented the light bulb is a matter of controversy and depends in part on what you mean by the word "invent".

Also, not all bad things are Nazis or the progeny of Hitler. If you want evil war criminals, try Hermann Goering, Joseph Goebbels, Emperor Hirohito, Pol Pot, Idi Amin, or Benito Mussolini. If you want serial killers, Google "list of serial killers" and learn the psychology behind psychopathy.

But for heaven's sake, do your research.