Student Talk / Language perfection or precision - does it work? [4]

Hello everyone.
I'm new here. And the site is pretty technical to figure out. But I'm sure I'll get used to it. So yeah, sorry if I'm posting this at "wrong" place.

I'm in high school, and I have this BIG TIME entrance exam coming up in which I have to write 300 word essay (on the spot), based on which my "writing skills" will be judged.

I wanted to ask you, is this the right place? I mean, ofcourse I did see people commenting on the ideas the essay held, but what about the language perfection or precision. Does this forum work on that too?

Kindly reply to my post. There is no hurry as the exam is like 1 and half year ahead, but yeah, as we all know, the sooner the better.

Also, I'm from a country where English is the second language, so I have serious grammar issues too. I need help on that.

{as this is my first post, I may not be aware of all the rules, so If I miss out on something, FORGIVE ME. I'm sorry. :) }