Essay - How to structure

I'm still struggling to build a proper and easy to read structure for my essay. I have the sources to analyse some of the theories I would like to explore, but it is also important how you distribute them to meet the academic standards they asked us . Doing a structure planning way before compiling all the information is really important in order to have a good outcome . Here is how I'm willing to structure it.

• INTRODUCTION (500 words aprox)
  Explain questions that I'm going to answer through the essay, main focus. 
• MAIN THEORY (2000 words aprox)
  I will explore and analyse Sigmund Freud's Human Psyche theory ( Id,Ego and SuperEgo)
• SECOND BODY
  Once I explained and analyse the human psyche,  I will analyse IDENTITY with Sherry Turkle.
• THIRD BODY
  Afterwards, I will introduce the readers to SOCIAL MEDIA 
• VISUAL EXAMPLES (500 words aprox)
  After understanding all the theory and context, I will use images of BLACK MIRROR to analyse, contrast and compare the relation between them ( Triangulation) 
• CONCLUSION  (500 words aprox)
  I should repeat the keypoints that I already use from each subject. State my opinion and answer once again the main question.