Change my spanish for english

Hi! I'm Miriam, I am 31 and I work in Foreign Trade. Now, for my job, I need improve my English Level. I think my level is upper intermediate and I understand a lot but I need to speak better because my face is very red when I speak English :) And sure, I am patient to speak spanish and to teach you my language while we have take a coffee. I would like to meet with you once a week. Thanks!