Wet spring roll wrapper with warm water. I usually heat a pot of water on the stove top (not letting it get to a boil) and once it's warm I put it in a bowl or plate that is large enough to fit the rice paper wrapper in.
Place wrapper on a hard surface. Place lettuce leaf on far left edge of wrapper.
Place a little of each ingredient into the wrap. Top with avocado and one or two leaves of the fresh herbs.
Roll wrapper from left to right, folding in the top and the bottom sides of wrapper toward the middle, just before the wrapper is completely wrapped.
Complete steps 1 to 4 for each wrapper.
Whisk all ingredients for the sauce in a small bowl. Add water to thin if needed. Serve as a dipping sauce for the rolls.