The whole rolling with the bamboo mat was impossible for me, never stayed together. I found this product on Amazon that's like a little plastic tube that makes the perfect roll every time!! It's so freakin easy. I don't know if I'm allowed to post the name because I'm not advertising for them or anything but I can message it to you if you want. Seriously for $20 it's AMAZING. We now make sushi for dinner at least once a week and it's so cheap compared to going out.
In mine I always do raw ahi tuna, avocado, and spicy mayo topped with sesame seeds. FI always does his cooked shrimp, cucumber and mayo. And we don't bother with the internet recipes for "sushi rice" that say to use a certain grain and rinse it 5 times and all that jazz. We literally use instant white rice and it still comes out great, we add the rice vinegar and sugar like you're supposed to but the first try we didn't and it was fine!