It looks like an interesting paper -- in fact, I'd like to read all of it! Why? Because I'm a teacher myself, and I wrote a master's thesis some years ago about language learning. (I'm now an English teacher in Poland, hence the misleading Polish flag.)
From what I see, your writing is only a bit clumsy in places. I've had much worse articles to fix up (and they were about genetics and nutrition, tough stuff!). As an additional bonus, I can read Spanish, so if I need a clarification, you can explain it in your native language!
Thank you for your consideration!
Kevin