Sushi Cake

My son wanted a cake that looks like a giant piece of sushi!! Here is my version of a brilliant cake by Rose Sen. Not as good as hers! But my son is thrilled with it. His friend is here and her dad owns a restaurant that specialises in sushi - and she thinks it's fab! LOL!! Next time, I would probably carve the top of the cake slightly, to give the impression of the prawn being thicker - mine really is *very* flat. I was losing the will to live, doing all those individual grains of rice!! My son also requested the cake flavour - a new one for me to try - chocolate and raspberry. It's divine!