Books say to cut nori in half but this is too small.
Either use the whole sheet or 2/3-3/4 of it.
Don't cover all the nori, leave 1-2 cm to overlap.
Don't put much wasabi on, it is strong.
The damn rice is sticky.
Cucumber, avocado works well.
Tried fish sticks, had to cut them so they were thinner all round.
You need a SHARP knife to slice sushi.
May be better to try the thick sushi if you don't mind a meal in a roll.
Possible fillings include:
Spring Onion, Carrot, Cucumber, Avocado, Omelette, Salmon, Smoked Salmon, Fish Stick, Tuna, Prawn.