So rule of thirds are very important when you see anything on tv or theatre everything is placed in a specific place in the frame following the rule of thirds. The rule of thirds is basically dividing your frame into 3 parts horizontally and/or vertically. These white guiding lines on this photo will help you see where these lines should line up with you actor/actress in frame. You can set up your child on either frame right or frame left but make sure he or she stays on that side the entire time for the review. For the younger kids your frame should look more like this photo, with head room and we should be able to see their shoulders. We give the extra head room because little kids tend to wiggle around more and this way it is easier for you to keep him/her in frame.
For the older kids because they are bigger in size we can use the above example or you can try this example below which cuts off the top of the head but keeps the shoulders and face in frame. If your child can sit still you can also try this approach. Either will work for me just giving you options and styles you can use for shots. this is called a Medium Close-Up by the way. Here is a link so you can watch on different camera shots just so you know all the shots, but we are looking for a medium close up. http://www.youtube.com/watch? v=XqJ7QfT2CtI