Secondly, calm down and be confident.
Don't try to make a perfect sentence before u say it. Just keep speaking whatever come to ur mind. But do remember, slow down and make your words loud and clear.
It won't hurt even u spell or say it wrong.
However, if u are too afrid to say something wrong, trust me, u will make mistakes.
English is a language for people to communicate, not a tool. It's noting official. As long as people who u are talking to get what u mean, u are a good English speaker.
So just relax and slow down when you speak English, I'm sure u will enjoy yourself speaking English.