@The Pentacle Queen,
Have any A2Kers taught english as a foreign language by doing a TEFL or CELTA course? If so may I ask you some questions?
I started teaching English long before these were fashionable/required/desired, PQ. It certainly wouldn't hurt to take one as in helps you get your foot in the door. From what I've seen and heard, never taken one, they help you with lesson prep, focus, and most importantly, how to get students practicing the language.
If you do this, the single most important thing to remember is to make your lessons have as much real context as possible. This dawned on me, early in my career when I noticed the students having a great deal of difficulty with a lesson in a textbook where you had to prepare for a barbeque and then have the barbeque.
There were a lot of phrasal verbs; cut up, flip over, etc. These are the ones that are so much a part of everyday language but the students have a lot of trouble with them.
I made a barbeque out of a cardboard box, took in knives and copier pics of various vegetables. That degree of context made all the difference in the world. Students should have to struggle imagining all these actions. The only struggle should be practicing them in context.
You wouldn't ask a child to "get the ball" if you didn't have a ball, would you? Yet so many teachers make their students struggle with imagining and doing language at the same time. Bad, BAD idea.
It's a grand idea, teaching ESL. You can see the world and get paid to do so.