Thank you so much! I learned English in Greece from a Greek teacher. When I was 22 I lived in Chicago for 2 years for my fiance's/ husband's graduate studies. I remember a big improvement in my accent and my vocabulary was improved, too. If we had stayed in the US that time, I think my accent would be a lot different, more American, but we returned to Greece and moved back when I was 48 years old. I don't think there is a way I can improve my accent, but I am so happy that I have enriched my vocabulary and I feel a lot more confident to speak English.