Expository Essay

Hi guys i got a english SAC coming up next week sometime, which is a expository essay on imaginative landscape. i dont know the prompt but it will something to do with Alistair maclouds book island.
We got a example prompt today "to understand some one we must look to his/her hometown"

im not that good at english but am willing to try hard this year.

if you guys can please can you help me with this example prompt with a example introduction and what things should my 3 paragraphs be about, like what 3 ideas should be in my paragraphs to do with hometowns.

please help if you can guys thnks