Shooting Children
 
		Children can be very awkward posers.  Children go through a phase from about 3 to 6 years old where they are incapable of pulling off a natural smile - instead you get some weird grimace.   Natural and candid shots of children are always the best.
 
Keep the children out of "photography" mode; give them a game or activity to play at.  Something much more interesting that you and your camera.   Set up the game in a way that gives you good lighting and bring the child to the game rather than the other way round.
 
Shoot quickly, emotions and moments are fleeting with children.  Take a lot of shots, the more you shoot the "luckier" you will get and the child will become less aware of the camera.
 
You can't force a child to enjoy themselves.  If the moment is not happening then move on.