Slice the salmon: Slice your salmon into strips roughly 1/4 thick or even a little thinner. You ultimately want to cut enough slices so that you will be able to have a layer that stretches evenly over the entire length of each of your rolls.
Slice the cream cheese: Cut the cream cheese evenly into 4 strips that are the length of your nori sheet.
Cut the avocado and cucumber: Slice the avocado in half the long way. Remove the seed and cut each half into 6 slices. Each whole avocado should yield around 12 slices. I would also drizzle a little lemon juice over your cut avocado to prevent it from browning in your roll. Then cut the cucumbers into strips that are as long as your nori sheet and about 1/8 inch thick. Prepare your bamboo sushi mat: Cover your bamboo sushi mat with plastic wrap. This will help keep the rice from sticking to it.
Press rice onto nori sheets: Next, place the nori sheet onto the plastic wrap with the shiny side facing down. Then press around 1 cup of rice onto the nori sheet in an even layer. Tip: Mix a splash of rice vinegar into a bowl of water and use to wet your hands prior to handling the sushi rice. This will prevent the rice from sticking to your hands. Some people also use sushi vinegar for this.
Sprinkle sesame seeds over rice: Lightly sprinkle sesame seeds evenly across the rice, making sure to cover all the rice.
Flip the nori sheet over: Gently flip the nori sheet over so the rice is facing down. You will add the filling directly to the nori sheet with the rice on the outside.
Add the salmon: Add the slices of smoked salmon in an even layer across the bottom of the nori sheet.
Add the avocado and cucumber: Add the avocado slices and cucumber sticks horizontally along the nori sheet on top of the salmon. In general, I add 2-3 avocado slices and 1-2 cucumber sticks depending on the size of each ingredient and how everything fits.
Add the cream cheese: Add the strip of cream cheese to nori sheet next to the salmon, avocado and cucumber. Make sure your cream cheese strip (along with all your other ingredients) stretches the entire length of the nori sheet so that all the cut sushi pieces have the same amount of ingredients.
Roll the sushi: Use the bamboo sushi mat to fold your roll until it is completely enclosed. Once the rice is making contact with the nori sheet, pull back the sushi mat so it doesn't get caught in the roll. Still using the sushi mat as your guide, finish rolling until the roll is completely wrapped. Then wrap the sushi mat around the roll and gently press, tightening the roll together.Keep in mind that rolling sushi is an art that may take some practice so don’t get frustrated if it doesn’t look perfect your first time. It will get easier the more you do it. Cut the roll: Using a sharp knife, cut the roll into 8 pieces. I do this by first cutting the roll in half. Then cutting each half in half. Then cutting each fourth in half. Tip: Be sure to clean and wet the edge of your knife before cutting each roll.
Serve and enjoy: I usually serve with soy sauce and wasabi. Sushi rolls are traditionally served with pickled ginger as well.