Lay down your plastic wrap on the flat surface you are using and place 4 Nori sheets in a square shape.
Place ½ a cup of your cooked rice in the center of the seaweed and lay it out in a diamond shape. Use moist hands or a moist rice paddle to make sure the rice is not sticky.
Spread out the cream cheese onto your rice evenly as this is your base layer.
Add all of your fillings in layers in this order: tofu, salmon, avocado, cucumber, chives. Make sure that you don't overstuff your sandwich as it can lose its shape.
Add another ½ cup of rice on top of your fillings and maintain that diamond shape to cover all the filling. Make sure to pat lightly and avoid thick chunks of rice.
Use the plastic wrap to pull one edge of the Nori sheet towards the middle of the rice and press down hard to make the seaweed and rice stick together.
Repeat the same step for the opposite corner.
Now, fold the other two corners towards the middle and seal them using the plastic wrap.
Press lightly to seal the Nori sheet and rice.
Your finished sandwich should look like a square package that can be cut into two triangles.