1 - Use your body language, including appropriate eye contact. Don't fidget with your hands or the rest of your body, and smile or maintain a neutral expression on your face.
2 - Speak clearly and loudly, so people can hear and understand you. Don't mumble, enunciate and try to fill the room with your voice.
3 - Practice makes perfect, or at least a lot better. The more you speak, the more you'll improve and the more confident that you'll feel.
4 - Seek feedback from trusted friends, a language exchange partner or a professional private language tutor.
5 - Embrace and learn from your mistakes. Mistakes are essential to gaining confidence. Don't be afraid to make mistakes. Try to let go of the desire to be perfect! Just spend the time and effort to improve from them.
https://shorturl.at/hnKP1 - from www.fluentu.com