I won't write this for you, because I know (A) you totally got this and (B) your teachers would be able to tell the difference in writing styles. However here are a few ideas to get you going.
- in your mind what would a love potion do?
- what are some ways it could back fire, and how would you prevent that if you could use magic?
- should someone obtain a love potion that doesn't know how to use it, would that be harmful to them?
Keep thinking of these types of questions and answer them, but keep it somewhat light because your audience if fairies.
I hope this helps you get off on the right foot!