Hi there. Iit is very important that you listen to and practise spoken English as often as possible to improve your English pronunciation. Click onto Knowledge at the left then go to Learn English. Type in your native language as your base language. You can also click onto Language Partners and Language Teachers at the left of this page and email native speakers to set up a time to practise oral English. Click onto Groups at the left and join an English one that you like, to practise your pronunciation. Italki members recommend these sites for improving your pronunciation: http://www.elllo.org/ http://www.bbc.co.uk/worldservice/learningenglish/ http://www.usingenglish.com/
 http://www.englishpage.com/
 http://www.sharedtalk.com http://www.tolearnenglish.com/

First listen listen and listen again. English learner podcasts are for beginner less frustrating than normal newsspeak. e.g. http://www.eslpod.com If your vocabulary and understanding is better find podcast about your special interest to keep the motivation. Read loud your favorite texts. Join English learning groups for real conservation and feedback.

according for me most important is to talk in english with someone whose english is good!