It never ceases to amaze me how talented youngsters are.
everything i was going to say about composition has already been covered by tuxcomputers -great minds think alike
To continue on the movie theme and paraphrase "Pirates of the Caribbean" ... they are not so much rules as guidelines.
The reason for the rule of thirds is to give the image a dynamic feel where as centering it is more static. There is no correct answer, it just depends on the message you want to convey.
Incidentally, the original image your daughter took already followed the rule of thirds. The head of the flower is in the top third of the frame.
Great work Chip's 10yo daughter. It's time to get your own username and start posting some more images
