You need:
To show that you have produced work in response to looking at the work of the artist's you discuss in the essay.
To identify the impact of their techniques and approaches on your work.
To describe and explain how you have critically approached and evaluated their work and its impact on your own.
To identify and consider how you have applied their approaches and then adapted them to suit your individual and original needs
That is to say, how you have made what you have learned from them real to you and your work
Most importantly, how you have developed it in new and personal ways to meet the particular challenges of your own project.