list stylistic devices such as symbolism, foreshadowing, allusion etc

Dear Writer,
this was written by your writers the teacher gave some comments which are highlighted in yellow in the attachment and below are his comments please note should not exceed 1500 words.
This was the original instructions:
this is a Higher level essay for IB English on Shakespeare’s book Othello. should include research on post colonial racism in Othello, how symbolism is included, racism itself, background research on Shakespeare to relate to any comments made in the book. list stylistic devices such as symbolism, foreshadowing, allusion etc. critical lenses is cultural. three main body paragraphs; first can be on language, second; imagery, connection to racial prejudice in both texts
These are comments from teacher now
www- well researched and good use of quotations
EBI-you have mostly explored how Othello is made to appear as ‘other’ but there could be more evidence oof intention (how do we know that the other characters are denigrating him rather than just describing him).
I Have attached the word version with the comments in yellow, i dont know if you need any more sources but feel free to do so.