Ninja birthday cake featuring karate ninja topper, hand-painted ninja throwing stars and shanghai text. Themed Birthday Cakes & How I Started Birthdays are a big deal in our house. Each year, our kids get to pick out the theme of their birthday party. When my first son was turning one, I wanted a simple 8" inch blue cake with a fondant whale on top. I called around to the bakeries who were quoting $60 or more. I scoffed and said, "Well, I guess I'm going to have to figure this out." I'll be honest. The first cake I made was a disaster. The buttercream frosting was sliding off ...