Hi,
To have an AEO, you need to first have a JOb offer from a Canadian Employer.
Some reliable lawyer/consultant can help find you one (WILL charge fees!!). But there is a hitch,,teaching being a regulated profession in Canada, chances are high that you wont get a Job Offer at all :-(
A pre-primary teacher, play school , day care (with certification & experience only) still have a better chance,,
Best wishes!!
I am not a lawyer nor an expert,,but a bit of experience, and I feel like sharing it with you. Best wishes!!