To assemble, divide the avocado in small pieces or serving glasses, or as one large layer on a bigger platter. Then pour over the remaining dressing over the top evenly.
Scoop the diced tomato over each serving and then top with equal amount of marinated prawns. Scatter chopped chives or scallions over the top and drizzle the plate with some sweet balsamic vinegar. Sprinkle with some peppercorns or chili flakes.