Answer:
1. First and foremost, a good answer is needed. If you have a good answer in a basic language, try and look up some synonyms for any adjectives or adverbs that might better your writing style.
2. Try not to have any run-on sentences and definitely refrain yourself from repeating yourself.
3. Depending on your question, stay within the limits of your question, do not spend too much time enforcing one idea, and don't spend too less time enforcing another idea. Keep your reasoning balanced.
3. Once you're done, go over the answer and change or replace any words that might strain the flow of your writing.
These tips will help you improve your essay as you write.