I recently did a children shoot and got some pretty good photos. It was a really great learning experience, it taught me a few things:
1. to entertain them (don't stop talking to them)
2. always give them instructions or else they will start doing something else, but don't give them to much instructions because you'll lose their attention.
3. be quick, and make it simple!
As I do this more often I'm sure I will learn a lot more.
I usually just take pictures of my siblings which makes it a little easier.....sometimes :)
but I would love to do more children shoots in the future!