Emma Asked: Undecided Question: Does this make sense in Spanish?

It is my last day at school tomorrow and I am writing my Spanish teacher a thank you card, who has taught me for seven years.

I'm not sure if this makes sense. Please, if you are fluent in Spanish or a native Spanish speaker, could you check/correct it for me. I would really appreciate it!

Gracias por ser una profesora tan excelente. No yo poda hablar nada una palabra de espanol antes de que viniera a 'DHSG' as que le agradezco me ayudar de descubrir mi facilidad para aprender idiomas.

Also, how would you say 'I will let you know how I get on at university"?

Thank you!