I have experience in different jobs where I have been training many people in various roles.

First I show you how to do the job by doing it myself, secondly I let you do the same thing yourself once, then I correct the mistakes and mark the hits, finally I let you repeat the job for a week or longer, once I notice that it's wrong. you control , change activities using the same teaching method until you get the job done with mastery .

It can work for teaching Spanish.