Hi,
If you want to or feel that you are ready to teach (not become a teacher, as IA said you are already a teacher before you even start yoga) then by all means do it. If you do it for the money, all I can say that it is the wrong motivation and intention and you have to re-think carefully why you want to do it.
I am a teacher in South Africa, chances of making a decent living out of yoga here is very slim, except if you heavily over charge your students. Therefore I still have my business as my general source of income, which leaves me free to tell people to come even if they can’t afford it, which is a real problem in SA as many people just don’t always have the financial means to afford the monthly fee, but who need yoga. It is also my way of giving then back to the community in a meaningful way.
But, I have an even bigger issue and that is with the type of course you going to follow. If you going to do a teacher course, please select a decent one. I am sorry, but I just don’t believe that somebody can teach you all the intricacies of yoga and especially anatomy in two months or 40 days or even two weeks I see now. Please select a course that is at least a year long, where there is constant interaction between you and your teacher and where the curriculum makes provision for intensive training on the many aspects of yoga. I think it is an abomination that people can become teachers in two weeks or even through correspondence course now.
Then, and I say this with deep respect, I gather that you might still be very young. I hope I am correct here, if not please ignore this. I am not sure what is the situation overseas, but in South africa, people will defnitely have a problem doing yoga with a person who is still in their 20’s. This is a cultural thing here and you must ask yourself if that perception might be a problem for you as well, if you are very young and teaching. If so, perhaps waiting a few years until your 30’s might serve you better.
Good luck.