I just want to mention that is not always necessary for the model to look directly in the camera, no matter if it’s a child or it’s an adult. I consider that these images look more natural. It looks like the photo was taken unexpectedly. I can engage a child if I need his/her attention. If no, I will ask the parents to help me standing right behind my back and trying to attract the child’s attention to the camera.
What kind of pictures are your favorite?