I understand the principle of the points...but couldn't get them to work.I'd think I'd have it lined up on the part I wanted to be in focus, then push the shutter button halfway...and a totally different focus point would highlight. Only in that one shot of Mira lying on the floor was I able to get it lined up on the eye properly. Those highlighted points kept moving around and I couldn't figure out how to force them to stay where I wanted.
I think I understand that there are different modes for the auto focus to work in, so I probably had it set in a wrong mode and just need to figure out which one I want and how to change it.