Happy Hippo Birthday Cake

My first birthday cake made for my son's 5th birthday. Mini - 4" cake.

Every year, I asked my boy what he wants for his birthday cake. This year, he told me he wanted a hippopotamus on his cake for his birthday celebration in kindergarten. Where to find a hippo cake? Can't get it in those common bakery shops and those custom made one may cost me a bomb! After I discussed with my sister in law (she's an expert in cake decoration), she encourage me to make it myself.
And, this is what I have made for my boy... The very first birthday cake that I made for my son ~ A Happy Hippo Birthday Cake and Cupcakes for the kid's to bring home.