It's not my original design.  Idea came form http://growthmemoriesforever.com/.  I however wanted more of a theme to mine as opposed to random pictures.  On the girls ones I did flowers starting small and getting larger with butterflies.  A butterfly at the top as she 'flies away'.  The boys got outer space as they grow up and over the moon!  But they are 6' fence boards painted many times over, hand painted and measured lines.  The flowers are all taken apart and hot glued together with gem centers