The Grim Walk of Life

So... a friend of the family comes up one day and asks me to draw a picture for him. In return he does some mechanical work on the car...wait... vice versa that and edit for grammar.

The concept he proposed was a man entering the world as a youth and exiting it as an old man. Not much more than that. This is my interpretation of the proposed concept.

One day I hope to come up with an appropriate title for it but for now "Untitled # 49"

***update*** The title has been changed thanks to an awesome suggestion from ersher9. Thanks much!