Dear Uday,
You can improve your communication skills
1-First of all enrich your vocablary learn good ,new impressive words for commom conservation, read magazines,newspaper etc
2-Command your wrting capabilties in english as well
3-Be expressive with friends , collegues , social groups effectively
4-Learn presenation, postures, expressing manner to whom you see in your social life who are ur ideal or whatsoever and practice them before mirror to get confidence
5-Make groups to practice extempore sessions, group discussions, role playing for your communication development
6-For dominance first of be confident about your personality your expressions your postures your body languages and your wya of addessing issues , you must start practicing , you will be grmmoed within short span of time
Regards
P K Mishra