write emails and reports, and we read the documents that are sent to us. Communication, therefore, is a process that involves at least two people – a sender and a receiver. For it to be successful, the receiver must understand the message in the way that the sender intended.
One of the best ways to improve your writing skills in any written genre is to read. I would recommend reading the type of communications that you wish to write to understand the tone and flow, then try to emulate it.
Reading reference books can also help, as does reading a variety of recreational texts, from fiction to magazines and well-written blogs. The more you read, the more developed your writing style will be.
Practice is important, too! Try to find someone who will give you constructive feedback on what you write and develop, as this will help you to learn and grow.