Here are some ideas for you:
"In a drama essay, your purpose is always to explore, explain and discuss the various significant ways by which the tools of drama have been used to entertain and engage the audience, persuading them to think about the world in a certain way - the dramatist's! The ideas explored by are called the play's
themes and themes are always made clear through the play's characters and action. All essay questions will concern some aspect of theme and character."
Check out further down on this site:
Englishbiz - play essays
Why don't you have a go at it, start writing an essay - paragraph by paragraph - and let us help you along??