The best way to expound on your description is by giving a brief background of what you are talking about.
In writing of a background about something, you need to have some factual evidence to support your statements to make meaning to the reader.
At times, you may be given a topic that has insufficient points; this usually disadvantages you because your points get finished whereas you are supposed to meet the paper word limit.
You may be given a 1000-word essay, and you get stuck while at 500 words, but at the end of the day, you should meet the length of the paper to satisfy your examiner; this calls for you to know how to lengthen your paper.
To make your paper even better (and longer), make sure you have at least one quotation from the text—if not more—to support your examples.
(And be careful about citing your quotations accurately, too.) Make sure each paragraph has a topic sentence, supporting evidence, and a concluding/transition sentence.
When you put down your points, you should be able to describe them vividly to the reader by use of descriptive words that match with your topic.
You will need to describe everything that you are writing about to the reader.
While writing your essay, do use quotes to match your description.
In constituting quotes in your work, you have to state the quote first, then explain its meaning while relating with what you are talking about in your sentences.