I started with covering the rice shape in a thin layer of fondant. I cut out rice pieces and glued them on one-by-one so that they fit snug.

Then I added the shrimp top and lightly sculpted it, and added the gumpaste tail. The colour of the shrimp was hand painted.

The nori is a thin piece of 50/50 gumpaste fondant that was hand painted with extra green and black then cut out and wrapped around.

The wasabi is just fondant. It was difficult to do to get that smushed-but-not-too-much look right. The ginger and plastic grass are gumpaste.