I do children’s talks on a regular basis at my church. I find them challenging, but on the whole they seem well received by both children and adults. Because of that I particularly bit near the end of this article where he talks about the importance of creating a welcoming environment – one of the reasons I always try to sit on the floor or steps with the children, not on a chair ‘over’ them.
See A Test Case in Passing on the Faith: The Childrens Sermon.
See also: http://www.greenflame.org/category/faith-religion/childrens-talks/