Use the language 24/7,even just talk to yourself, imitate others' way to talk.
Hi there, I am native Chinese speaker with bachelor degree in English. From my personal experience I talk to myself a lot to improve my speaking. For example I talk to myself daily routines every morning in English; I recorded myself and check the pronunciations. Talk to yourself can avoid any embarrassing. After practice, you will be more confident to talk to others! Hope that suggestions helps.