All news stories are based on the 5 Ws
WHO: Who organized/sponsored the event? Who will benefit from it? Who of celebrity status will be there?
WHAT: What specifically is the event?
WHEN: What is the times and dates of the event?
WHERE: Where is it being held? Where are those who will be benefited?
WHY: Why was the event organized? Why this particular event? Why at this time?
Get answers for those questions. Be certain to get names of the sources along with their connection with the event?
Keep the story as short as possible, but be certain that who reads it will find the answer to those questions. Avoid being dramatic, but put in some descriptive adjectives. (ie: This year's annual pine cone collector's meeting is being held in a bright green mylar tent, decorated with handpainted pictures of various pine cones, and one ugly artichoke.)
Use very few of your own words and quote from other's. (ie: Mrs. Blugsmirk of Bugtussle, Kentucky said: "Lands sake, That thar is the greenest tent I ever did seen."