Make an Outline
Before you set out to teach something, there should be a clear outline in your mind about how you will sequence the information. This will help you to breakdown the information accordingly.
Sort out the Filler Material
Remember who your audience is. They are mostly people who don’t have an idea about the extent of your knowledge and it is never a good idea to let them know about that. Come to their level, and reveal only as much information as they can grasp, or require.
You should be fully involved in your presentation. It shouldn't be just a duty which you have to fulfil. Try to use various aids to help people learn and keep them entertained and stimulated by your energy and focus.
Let the Learners Lead
If you just keep on lecturing people, it becomes boring after a while. The key is to involve the learners. Give them tasks and encourage them to come up with questions. You can then address individual questions in front of everybody.
Always conclude and reinforce your information at the end, so that the audience can retain the information.