[wi11iam]

I agree, you're not a native English speaker, but you are more than qualified to teach. Some countries just require that you have a passport from an English speaking country, some will look at your birthplace.

I don't think you'll have a problem teaching in most countries. There is often a big demand for English teachers so I'm sure you'll be fine. Just take a look at the country where you want to work and do some research, apply for a few jobs and see what happens.