Really great style.
Its like the trip into a kids imagination as he plays inside his sandbox. I remember the things I would think up as I was playing with my truck haha. I loved all of the faces they made it was really cute. The animation was awesome and the crayons used for coloring was even cooler. At first I was like HEY WHAT HAPPENED TO THE THIRD KID?! Then I realized he fell out of the sewer haha.
Great job, keep up the awesome talent you have.