I need help for this assignment. Just a basic explanation or example would be great since I'm having a hard time understanding what I need to do!

Do a close reading of Langston Hughes’ “Theme for English B.” Note any points of contrast within the piece, including visual, tonal and/or stylistic. For each type of contrast, create a claim that requires defense from the text and defend it with evidence from the poem itself.

Link to poem: https://www.poetryfoundation.org/poems/47880/theme-for-english-b