How to write a comparative essay on poetry?

How to write a comparative essay on poetry?
I have an assignment where I am required to write a comparative essay on two poems with similar themes I choose A Red Red Rose by Robert Burns and The River Merchants Wife:A Letter by Ezra Pound. I can tell love and wanting to be with the person you love are major themes but I’m not sure how to write about them

The links I’ve given you for the in-depth analysis on both poems,
will make your assignment a lot easier to complete…:))

“The River-Merchant’s Wife: A Letter,” by Ezra Pound is not only a letter from a woman to her husband, but is also a narrative of a young woman’s sex life. It tells of a river merchant’s wife’s feelings on sex throughout her life and marriage. It also shows how her views change with time and circumstances. The poem starts with her early childhood, and then goes quickly into marriage, and ends when her husband has to go away on business. Never once does the poem mention love, but it does elude to the fact that sex is better when some feeling is involved.
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This too is excellent!…

A Red, Red Rose Summary
The poem opens with the speaker comparing his love to a “A Red, Red Rose” and to a “melodie / That’s sweetly play’d in tune!” In the second and third stanzas, the speaker describes how deep his love is. And it’s deep. He will love his “bonnie lass” as long as he is alive, and until the world ends. At the end, he says adios, and notes that he will return, even if he has to walk ten thousand miles.
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A song of similes and metaphors on ‘love’; some of which are not that jaw-droppingly good in isolation. Let’s face it, the first two lines could be straight out of a valentine’s card. But these words married to the traditional melody become a little masterpiece of a song; a concise description of true love.
In fact, as the song progresses, the quality of its ‘love comparisons’ grows as much as the ‘depth of the love’ described in the song itself as it progresses. Throughout the song, the expanse of the love ‘grows’ as the expanse of the similes and metaphors ‘grow’..
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This too is excellent

How to write a comparative essay on two poems:-
The introduction:
Make this concise but be sure to include some good points, make sure you name the two poems and the authors. Say what the poems have in common and what are different about them. Drop in some hints about what you are going to tlk about later on in the essay but dont make it any longer than 100 words

Throughout your essay, move from one poem to the other in every paragraph. Start each paragraph with a topic sentence which summaries how each poem is related to your point:
Both poems demonstrate…
Although the first poem has a positive tone, the second poem…
Each of the poems takes a slightly different approach…
The two poems contrast in…
There is a similar description of… in both poems.