Place the mint and coriander leaves on the rice paper wrapper in a line about one-third up from the bottom of the circle and 5 cm in from each side. Top with 4 marinated prawns, lettuce, cucumber and carrot. Fold in both sides of the wrapper and roll up tightly to enclose the filling. The finished length of the rolls will be approx. 10–12 cm long. Repeat with the remaining wrappers and filling. Serve with the Dipping Sauce.