Follow these tips step by step and I am sure you guys will be able to improve to communication skills.
1- Believe in yourself and speak with confidence.
2- keep your Ears open .
3- Listen carefully then give reply.
4- be calm while speaking English and do not worry about grammar .
5- Read the newspaper online/offline on a daily basis and underline the paragraph which you are not able to understand and search it on the web or ask anyone who can answer you.
6- Use English as your language on daily basis.
7- Talk to friend in English.
8- Find new words and use those words on daily basis before it leave you.
9- Read everything very carefully and apply that wile talking.
10- Last but not the least Practice, Practice , Practice cause it make a person perfect.