Hi there,
First off, I'm a Native English Speaker from Canada ( so we speak with a North American accent) who has been to your country- which was lovely! Let me answer your questions.
1. We could chat over Freelancer's telephone communication app once the project has been awarded. Not sure how much experience you have here on this platform, but I could help you out.
2. I have taught ESL to various people from all over the world for the last 10 years! I also spent 3 years living in Indonesia teaching IELTS related courses with great results. I only came back due to the whole pandemic starting....
3. For you to master American English in 30 days, you would need 3 hour-long sessions a week with me and then a minimum of 3 hours of practice per day on your own. Mastering any language takes time and dedication!
4. My fee would be 750 Singapore Dollars for the month with a 250 Singapore dollar down payment here as a milestone before our first class.
Hope I answered your questions and if you are interested, please get back to me. Terima kasih/ thanks/xie xie!