In most cases communication problems are not based on a lack of skills, but a lack of focus. Many project managers place communication on the bottom of their priority list. When they do communicate, it tends to be short and cryptic, as if they are trying to get by with the minimum effort possible.
The key to communicating is to focus on the receiver of the communication needs and the information that will be most helpful to them.
Poor communication can cause many problems and aggravate others. On the other hand, proactive communication can help overcome many other mistakes. Use it to your advantage to help your project go smoothly with less frustration, less uncertainty and no surprises.