Hello everyone, I am a new here.
I would be grateful if someone help me correct / give me ideas of improvement...

Q & A as below:
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Q:
Your-have a full-time job and are also doing a part-time evening course. You naive find that you cannot continue the course.
Write a letter to your neighbours. In your letter:
describe the situation
explain why you cannot continue at this time
say what action you would like to take
Write at least 150 words.
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A:
Dear Neighbours,
Thank you for giving me an opportunity to do a part-time evening course for you, but I am sorry to tell u that I am not able to continue the course from next month.
Since I have been promoted last week, the job natural of my full-time job has been changed. I can foresee that I have to work overtime from next month after the new project being. That's mean I am not able to do a part time evening course anymore.
I decided to stop doing the part-time evening course for you from next month, but I will find my friend Kenny who is a full-time teacher to replace me. He is a more able course teacher than I am, and I think he must fulfil your requirement.
Thank you for your understanding; I am looking forward to work for you again.
Sincerely
Assman