It's THEIR cake, not Martha Stewart's. Use white fondant to cover your cake and give your child food markers to decorate their cake. Imagine doing this every year and seeing (in pictures) how your child develops.
"Every fall before school my daughter and I go on an overnight princess date. We stay in a fancy hotel, drink Shirley Temples, have breakfast in bed and go shopping. And EVERY year, we hit up a photo booth. My hubby does a similar thing with our son.. but theirs is manly, and smelly and involves camping and fish guts." AHHH we gotta do this too