The first four frames show a couple of kids having a snowball fight, and one stray snowball being flung
 down a hill.

The snowball is seen picking up speed and becoming larger, which is contrasted against the slow
movements of the old main leaving his house. The use of speed lines help to show the direction and
speed an object is moving.

We see a shadow cast over the old man, and then the speedy approach from the snowball's point of
view. I wanted the last two frames to show the sheer size of the snowball in comparison to the old
man, so by puling the 'camera' back, we get clear shot of the shear scale of the snowball.