Serve the fennel salad on the serving plates, sprinkle in the rest of the shallot, place the mozzarella balls and orange segments around each plate and display the red onion rings and fennel green stalks (as well as capers if you like them). Drizzle some more olive oil, grind some pink pepper and sea salt. If you want, you can add a drizzle of reduced balsamic vinegar for effect.