You can improve your communication skills:
1. First of all, enrich your vocabulary. Learn good, new, impressive words for common conversation. Read magazines, newspapers, etc.
2. Command your writing capabilities in English as well.
3. Be expressive with friends, colleagues, and social groups effectively.
4. Learn presentation skills, postures, and an expressive manner for those you encounter in your social life, such as your ideals or others. Practice these skills in front of a mirror to gain confidence.
5. Form groups to practice impromptu sessions, group discussions, and role-playing to enhance your communication skills.
6. To establish dominance, first, be confident about your personality, expressions, postures, body language, and your way of addressing issues. You must start practicing; you will be groomed within a short span of time.
Regards,
P K Mishra