I have been in your shoes. Being a non native such as yourself and learning English requires a little more than grammer, vocabulary or pronunciation. I have studied English for 14 years of my education life. Mostly with native proffessional teachers while I attended Private Schools. They were useful, yes. But the majority of my understanding came from my local teachers, because they knew the thinking structure and where a non-native might struggle, as they have been through those stages before.
As Turkish is grammatically incredibly similar to Japanese in such areas like sentence structure and liaison, I believe I can help you more than a native English teacher can in this aspect.
I have also studied international relations in university and comleted the last year of my program in Oxford University. My cross cultural awareness and ability to speak on many different subjects will make you feel comfortable and make English learning a breeze. I have worked for 10 years giving not only English lessons but ability based competency lessons to high level managerial positions and executives. On strategical thinking, analysing and problem solving, customer focus, open communication, coaching and teamworking, influencing others, persuasion and many more. We can also put these subjects into our lessons which will be a great boost for your career and business life apart from your level of English, which actually costs thousands of dollars to attend.
You will find not only a teacher but a friend who is eager to prepare you to life, business life in the global, ıntercontinental world, where borders are just a mental obstacle. We'll go through those obstacles together.