Slice all sushi fillings (e.g. fish, cucumber, tamagoyaki, avocado) to 1/4" to 1/2" thick sticks. You can place the fillings on a serving platter, if desired.
Take your sheets of roasted seaweed and cut or tear lengthwise in half. Serve alongside sushi fillings and rice to allow your guests to make their own hand rolls.
To make a hand roll, place a small layer of sushi rice onto one half of your seaweed strip.
Layer your fillings of choice on top of the rice so that they point along the diagonal.
Fold the seaweed strip diagonally across your fillings and wrap behind, creating a cone shape.
Eat and make another! If you have leftover fillings, fresh sashimi can last in the fridge one more day.