Compare or contras

hello everyone. i am very bad at my english language. i need a help with writing.
which is compare or contrast. But i dont know structure how i writing compare or
contast. Pleace check it, and tell my your advice.
thank you.

1.
Compare or contrast Mary before the murder and Diana after drinking the love potion.
After drinking the love postion, her attitude to Alan is changed. First of all Diana falled in love for Alan. And her character changed more romantic. Finally I think that her character will not change like old man says, although she fall in love with Alan. Mary before the murder, she was caring and devorted housewife. She was happy her life also in love with her husband, but she changed from a docile, meek, seemingly, clingly, woman incabable of independent thought to strong,lucid, and cabable of very clever deception.

2. Both The Chaser and Lamb to the Slaughter use transformation as a central theme. Compare or contrast the use of transformatin in both stories.
The chaser and Lamb to slaughter are different transformation. The chaser, love potion is changing attidute woman to fall in love Alan. readers can concept that woman and Alan will meet again. However The lamb of Slaugther, Mary`s love of her husband is broken . They are never meet again because she killed him

3. Compare or contrast the use of irony in both stories.
The chaser and Lamb of the slaughter of irony involves the little simmilar characters. In The chaser. The old man how he is already enticing young Alan Austen to return and buy the so-called life-cleaner. Old man’s sales technique is show us how he intellegent. For example, his concluding words, “Au revoir” (that is, “until I see you again). The words conventionally mean “goodbye,” but on the other, they suggest that the old man expects a future meeting when Austen will return to buy the poison to kill Diana. In the same way in the story of lamb to the Slaughter, Mary is both intellegent and capable of very clever deception. Although she killed her hasband, she would not murdered anymore and no one can not know that what the murder weapon might have been and where is could be. Because they ate weapon.