After moulding the rice from the shape. You can actually start to decorate it with bites or corn, carrot, cucumber or even seaweeds. It's up to individual to decorate based on your own creation.
Saw this cute little individual sushi moulds from Daiso Plaza Singapura. And immediately Reyon grab one of each design and put into the shopping basket. He told me that he wants to make "Face" sushi using these moulds.
This type of sushi mould really makes traditional sushi like Nigiri and Maki easier for homemaker like me. What you need to do is to wet the mould, the stuff it with the cooked sushi rice, press tight and de-mould it to get the desire shape before adding the topping and wrap with seaweed strips. Eg: Sample picture of the assorted sushi made using these moulds.
You can used these moulds to make assorted Onigiri (rice balls) which is also known as Omusubi. It is a snack of Japanese rice formed into triangle or oval shapes and often wrapped in nori (edible seaweed). Traditionally, the onigiri is filled with pickled ume fruit (umeboshi), salted salmon, katsuobushi, or any other salty or sour ingredient. Eg: Sample picture of the mini rice balls for kid's bento and Assorted Onigiri using the mould to make the rice.