I strongly suggest learning to make Cali Rolls with a canned tuna/mayo mix or a vegan hummus roll first.

Way cheaper to practice on and you can safely pack these kind of rolls for lunch with just a cheap-o ice pack.

https://makemysushi.com/Recipes/canned-spicy-tuna-sushi-roll-twist

https://www.emilieeats.com/veggie-sushi-hummus-wraps/