@tanguatlay,
Composition is one kind of writing where you can write how and what you feel.
Tips on how to write a good essay :
Plan your essay in advance Do not write straight away. Plan before you begin.
Jot down briefly the main ideas, supporting paragraphs and points.
Write clear and simple sentences to express your meaning in simple words.
Stay focused on the main idea of your essay.
Re-read your essay in the end.