For each serving, place the can in the center of a plate. Fill with the following ingredients in order to create separate layers: 1/4 of the bean salad, 1/8 of the mesclun lettuce, two tomato slices, 1/8 of the bacon, 1/8 of the mesclun lettuce, two tomato slices, 1/4 avocado and 1/8 of the bacon. Press lightly and remove the can. Proceed in the same way for the other plates. Serve immediately.