A confirmation

Hello

I just signed in to this forum and I have a question relating to essays. I´m from Finland so my English isnt perfect, although, i hope it would be someday. Therefore, Im trying to apply to a university to read English. But I have lot of concerns about it as my English could be much more better. Like in any university there is mutual a test for everyone. The test has three parts: the first part is about grammatic and vocabulary, the second part is a reading comprehension, and the third part is an essay. Hithertho i have been confident about writing essays but now im not because the subjects are harder than in high school. There are three books and you need to read at least one of them. Hence, I have selected Mary Shelley´s Frankenstein. I have read it already but when i saw an example test, cold shivers went down my spine. This is the example subject for an essay of Frankenstein: "Why do you think Mary Shelley chose to share the narration of her novel Frankenstein among three dofferent narrators: Robert Walton, Victor Frankensteinm and the monster himself". At this point comes my actual question: ( Sorry for the long warm up speech) Is it possible that I try to write this essay and post it here and then you could review and and find the mistakes in it? And, of course, all hints would be accepted with open arms. Thank you!!