English Grammar, and conversations in English for proficient fluency

I have a bachelor's in Languages, Literatures, and Cultures, with a major in English Studies and a minor in translation from the University of Lisbon, Portugal. I am now studying to get a master's degree in Applied Linguistics and Language Acquisition in a Multilingual Context, at the Universitat de Barcelona. I have a B1 level of Spanish, as I understand pretty much everything, but I prefer to give my classes/sessions in English, for people who feel stuck with their speaking proficiency, and vocabulary.