Produce Produce

As I said at the beginning of this article, you might know a lot about the language, but this is passive knowledge that must be activated somehow. Your aim is to be able to produce correct English; practice is undeniably the best way to learn and improve.
Writing is one way of producing language; it may help you get used to and reflect on the ways English operates, which, in turn, might prove to be useful when speaking.
Speaking, on the other hand, is a much more spontaneous process and nothing prepares you for it better than actually doing it. So, find people you can practise with