Verb conjugation of "streichen" in German

I have been living in Holland for the last 14 years and I know the mentality very well. Holland is a small country, everybody knows everybody, so if we want to succeed, we must seize the opportunity.
My correction were added and highlighted with yellow markers and attached to this email. Tell me now if you have any questions about grammar rules, since I was a teacher 10 years ago.
I live in Cataluna in eastern Spain. I have learned in a language school in Berlin but unfortunately only for a short time. I am a waitress by profession and looking for a new job in my village.