Flip over the nori with sushi rice side down, and place it on the bamboo mat positioning it towards the bottom edge of the mat. At the center, place trimmed datemaki pieces from step 5, cucumber stick, the stewed shiitake from step 1, sakura denbu from step 2, shrimps and spinach from step 3, lengthwise. Roll up tightly then remove from bamboo mat. Set aside.
Roll up the bamboo mat, pressing forward to shape sushi into a cylinder. Press down once at the halfway mark to make sure all ingredients are positioned in place, and roll forward.