To do a good job with children, see yourself first as a child educator and second as a soccer coach. The ABCs of coaching, created by Ashley's Soccer Camp in Montclair, New Jersey, and adopted by coaches nationwide, can help you do that. Have one consistent stop command. This is the only command used by Ashley's Soccer Camp trainers.
Players learn to recognize it and react.
Be loud and forceful. Be firm, fair and happy. Make the children do what you want them to, but always do it smiling. Also, children will respect you if you are consistent and fair. Always coach what is right.