Talking to a native speaker can be scary if you haven't done it before so to start of with I would listen to a lot things in English so you can hear the sounds and such. Reading a lot of English books to build your vocabulary. It's important to build vocabulary so then when you do begin to speak to speak to a native speaker you won't feel too scared and they will be able to understand you even when you make mistakes. Rushing into speaking a native speaker isn't always a good idea as most of the time they might not know your language so you won't be able to say words in your language. Focus on listening and reading to build vocabulary to start off with and then when you feel that you can understand listening to English then speak to a native speaker and they can help you with the rest :). Good luck learning English :)

You need you practice with a native speaker and/or writer. Studying or taking classes will only cover the basics and often sounds robotic. Unless you practice with someone, you will never get far.