Be direct and concise in your announcement. Your reader will be able to understand the information quickly and can refer back to it easily.
Write a short, friendly announcement that's to the point when you're sharing positive news. Written in the right tone, an announcement can show a wish to keep up a business or personal relationship. It can also build on positive feelings like confidence, allegiance, and helpfulness.
Recognize what others have achieved in your announcement, and motivate your reader to reach similar goals.
Present your information in a plain and complete way, so your reader will understand you the first time (and not ask questions later).
If the news you are announcing is bad, write it in a direct statement. Add a message of understanding and optimism to your announcement, in a respectful tone.