First of all, you should pay attention to the genre and title of the play. Try to find out relevancy of the title with the objective of the play. Get information about the production company that is handling the show and know the background of selecting a particular venue.
You should try to get the details of the main story of the play which will help you to pay attention to all details when the show goes live. Compile the synopsis of all events of the main story and introduce all the characters and their roles in the play.
Do not forget to write on the major conflict of the play. It will help you in grabbing the interest of the readers and they will thoroughly check out your review. However, try to avoid mentioning the details of the events in your review.
As a critic, you need to discuss everything about the play. You should share your opinion about the performance of different characters. Also, present your point of view of how these characters made it possible to justify their roles in the overall production.
Nothing is perfect and you will also find many flaws in the play. Make sure you highlight these flaws in your theatre review in a way that does not create disappointment but inspires the producers to improve the overall quality.
You should also mention your opinion about the background music of the play. Make sure you clearly state whether the music was appropriate for the production or not.
You should also include details of the writer in your review to let the readers know about the other accomplishments of the same writer. It helps in knowing the general tendency of the writer that enables the readers to understand his or her work in a better way.