how to polish ourselves to ba a good language teacher?

I agree, you could have gotten more responses in Q&A, but then again, teaching is also relationship. A few tips ( give a bit of class at a school) 1) Know you subject that you want to teach very well. 2) Be well prepared for each lesson. 3) Be well presentable. 4) Build relationships with your students, they will want to trust you, and that gives you more confidence. 5) Have a lot of patience. 6) Keep it simple and fun. 7) Bee excited about what you do, it rubs of on the students. 8) Be yourself, no pretences. 9) Enjoy yourself. 10) Bood luck, may it be a great success. Blessings