what happens when a little boy sneaks the camera

As I flipped through the photos of Simon's first day of preschool on my camera, I discovered there was a library of shots that I had not taken. Some had a very abstract quality. For instance this:

And this:

Others were intriguing because of their vantage point and cropping, like this:

and this:

Who could this mysterious artist be? Oh wait...I think I might have found a clue:

I know of only one little boy with feet like that....