Here's what you do:
1. Find a picture of you before the age of, oh let's say five.
2. Take a picture of you now in the same pose as that shot.
Have a look at some examples of Crooked Brain's "Old Me/Now Me". (some of them are creepy/funny/cute)
3. Then post your "Me Then/Me Now" pictures and these instructions in your journal and encourage your Friends List to do the same.
So, c'mon, show us how cute/awkward/funny/adorable you looked like then and how you look now if you were to pose the same way today.
If the camera had been invented when I was a child I'd have my own "Me Then/Me Now" posted.
Just kidding - I have to find the box all the family pictures are in and find one that I want to recreate.