Slice the fresh mozzarella into discs of a thickness to your liking (I think a thin slice is best no more that .5 inch). Slice the tomato in the same way. To present - Alternate them on a platter - tomato, cheese, basil, tomato, cheese, basil and so on in an overlapping effect. You can make individual rings around the platter, or fashion it to move in a spiral to the center of the platter. I like to put a good bunch of the basil leaves in the center just for presentation sake. Sometimes I will chiffinade some basil and sprinkle over the whole plate. Just before serving, drizzle on some excellent extra-virgin olive oil, sprinkle with salt and pepper and enjoy.