It's meant to show the evolution in artistic ability. It was meant to be about badly drawn stickmen coming to life and coming into trouble due to how badly drawn they are. Then an improvement in artistic ability allows them to get further in life.
I totally accept that my own artistic ability at the time didn't allow me to fully express myself and I'll return to this in however many years when I'm good enough to show the story I had in my head.
The first stick-man isn't properly connected, so he falls apart. The 2nd can't stand, due to his wobbly legs. The 3rd seems to be Ok... but what's this! He has no eyes! So he bumps into the tree.
Then, some girls were going to laugh at him and other stuff would have happened, but I got dispirited after showing off this 'work in progress' and it didn't seem worth continuing.