I found a web site for you to access that gives a full outline on how to write a process analysis essay.
"A process paper either tells the reader how to do something or describes how something is done. As you write your process essay, consider the following."
"A Process Analysis Essay: Either helps readers perform the steps themselves or helps them understand how something works."
- Presents the essential steps in a process
- Explains steps in detail
- Presents steps in logical order (usually time order - chronological)
The first link will provide you with a step by step writing process. Good Luck!