This is my first English essay

This my first time writing an English essay
It is Saturday, outside is very hot, up to 32 degree C,
I am gossiping with my mum, while watching a TV show.
Lately, I often feel that I wastes so much time.
In September, I have to take one last CPA subject exam. Last year I thought I would get pass,
however the result was very disappointing. Since last year, the CPA exam includes an English test. You have to answer the some of the questions with English.  This section is worth 22 points of the entire 100 point test.
This is a huge challenge(or disadvantage) for me because I learned English by myself from after? college graduation.
I learnt Japanese was my first foreign language.  I'm also bilingual, I speak Korean at home while speak Chinese at outside or at work.
This seems a little complicated, I hope I did not confused you, ^^
anyway, thank you so much for patiently reading and correcting my poor English, and correcti me patiently you must be a kind person.
see you later, have a good day~

First time correcting, hope it helps

This is my first English essay

It's my first time writing an English essay 
Today is Saturday, it's very hot outside, up to 32 degree C,
I am chatting with my Mum while watching a TV program. 
Lately, I feel that I waste a lot of my time,
In September, I have to take one subject of CPA exam for the last time. Last year I thought I would pass,
however the result was very disappointing. 2 years ago, the CPA exam included an English test, you have to answer some of the questions in English, the English score is worth 22points out of 100points,
(This is)it's a huge challenge(or disadvantage) for me, because I learned English by myself from college graduation.
I learned Japanese as my first foreign language, also, I am a multilingual as I speak Korean at home while i speak Chinese outside or at work. (you are bilingual when you speak only two languages but multilingual when you speak more than 2 languages)
this seems a little complicated, I hope I have not confused you, ^^
anyway, thank you so much for patiently  reading and correcting my poor English.  you must be a kind person.
see you later, have a good day~

my first time of correcting too. :-)