Cook the rice and let it cool slightly.
Cut the salmon and avocado into bite-sized pieces.
Cut the onion, cucumber, cherry tomatoes, and other vegetables into appropriate sizes.
Mix soy sauce, sesame oil, lemon juice, sugar, and wasabi to make the sauce.
Place the rice in a bowl and add the prepared ingredients on top.
Drizzle the sauce over and finish with seaweed, sesame seeds, and chopped green onions.