Cover your bamboo sushi mat with plastic wrap. This will help keep the rice from sticking to it.
Use kitchen shears to cut the top fourth or so from the nori sheet. This helps to keep the rolls smaller and easier to eat with chopsticks.
Next, place the nori sheet onto the plastic wrap with the shiny side facing down. Then press around 3/4 cup of rice onto the nori sheet in an even layer. Tip: Wet your hands in a bowl of water mixed with a splash of rice vinegar prior to handling the sushi rice. This will prevent the rice from sticking to your hands.
Flip the sheet over so the rice is facing down.
Add around a tablespoon of tobiko or masago in a row across the nori sheet. This will give the filling some color along with some additional flavor.
Slice the cucumbers into strips that are as long as your nori sheet and about 1/8 inch thick.
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 often cut the slices right out of the avocado half and add directly to the roll to ensure freshness. You can also drizzle a little lemon juice over your cut avocado to prevent it from browning in your roll. Add the cucumber sticks horizontally along the nori sheet. In general, I add 2-4 avocado slices and 1-2 cucumber sticks depending on the size of each ingredient and how everything fits.
Add around three tablespoons of the salmon skin pieces that you prepared in an even row across 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 tighten 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. Tip: Check out the video for a demonstration on how to roll sushi. Using a sharp knife, cut the roll into 8 pieces. I do this by first cutting the roll in half. I then cut each half in half followed by cutting each fourth in half. Tip: Be sure to clean and wet the edge of your knife before cutting each roll.
Serve and enjoy! You can serve with soy sauce, wasabi, and ginger. Eel sauce (unagi sauce) also goes well with these rolls.