It is important that you organise events that your members want, so try and have events that appeal to the majority by making them novel and original.
If past events have been successful, talk to people who organised them.
Ensure events can at least break-even, otherwise there is the danger of losing a lot of your funds.
You need to plan the event thoroughly including tickets, cost, venue and timing.
Be accurate with your costings so as to avoid any unpleasant surprises. Have regular meetings to check the status of the event and don't be afraid to form sub-committees, particularly for the big events.
Remember to pick the right date for your event. Don't clash with other society events or big national sporting fixtures.