Well you definitely have excellent English! As far as I can tell :P I know one of the major challenges with learning English is actually speaking it, because many words aren't pronounced how they are spelled, and English sounds like gibberish. As a native English speaker, it's hard to answer this question. I think a lot of it is practice and patience. Try to expose yourself to people who speak English on a daily basis. If you dont know many people who speak it, try watching English movies/news or listening to English music. I think reggae music may be one of the better options here since it is generally a little slower than most music genres so you can understand what they are saying (unlike rock music) and its also grammatically correct most of the time (unlike rap or country), though there is a lot of slang terms in reggae. https://www.youtube.com/watch?v=QTOyeFQgZKk <- English reggae with some Portuguese, one of my favorite songs/bands Hope this helps! Good luck :]

Firstly you have to expose yourself to the language as much as possible- through movies,songs,lectures etc and of course reading.Next you have to practise speaking as much as possible,preferably every day.The more you do this the better your language will become.