First, think of the topic and what will you write about it.
Example: Cyber Crime
Do not make a title, and make it when you finished the essay.
List all the topics you are going to write about the topic per paragraph.
Paragraph 1 - Introduction: What is Cyber Crime?
Paragraph 2 - Body: How someone does Cyber Crime?
Paragraph 3 - How can we prevent Cyber Criminals on attacking us?
Paragraph 4 - Opinions
Paragraph 5 - Last Message
Then, start thinking on how you will construct the paragraphs. Read about the topic, it will be useful if you do research.
Then, make up a title.
That's what I do to make a good essay.