You have to be a bit more careful when writing a news bulletin than you would be writing a story for a newspaper. You are confined to the time available and have to ensure that you balance stories with different levels of importance and with different tone and pace.
You also have to think about the audience for your bulletin. What kind of information do they expect to hear, and in what order? They will expect a mix of news, some heavy and some light, some about major developments in society, others about ordinary people. They will want to see their own country or town represented. They will want to hear some opinions on the issues involved and they will also want to have some amusing ephemera as well.
It is usually the case that a bulletin will start with headlines highlighting the major stories of the day. This will help to promote the stories, particularly to those listeners who may not be aware of them. The order of the stories in the bulletin will vary according to your audience and the number of important stories you have to include.
You will need to include some short recorded sound called actuality, which is a piece of speech or an interview with someone who has a direct connection with the subject. These pieces of actuality can make a bulletin much more attractive to listeners and they can also be very effective in breaking up the reading of long passages of text.