Well, when its in first person you get more of an insight on how they really feel and think while when its in third person you have to rely on a guess and not a fact. So it limits the readers knowledge on the thoughts and feelings of the main character. Hope this helps :)
This is an optional writing question. But, if you can't figure out what to write about i suggest maybe a fictional story about "your" dying dog and you saved its life. Something easy and believable.
Made a promise with Macbeth and king banqous
A. To what purpose do April, you return again?
Hope this helps.