Hi There,
This side kartikey from India, dear English learning is not so tough as people have made it. For becoming a good and professional English teacher, you need to update yourself daily with the help of Internet. Be ready to check the new worlds given by Oxford and one more thing which is very important, that is emotions while speaking. Launguage means to convey your thoughts. If you have same emotions and that can convey the same message you are trying to speak.
Thanks for considering this mail.
If you have any doubts in future, please contact me.