To make the dressing, mix the finely chopped shallot, orange and lime juice together and season with freshly ground pepper. Set aside.
Salad
Halve the pomegranate lengthwise and seed one of the halves. Quarter the tomatoes.
Mix the salad leaves, tomatoes and pomegranate seeds with the orange and lime dressing.
To make the avocado rose/flower, firstly halve the avocado and remove pit. Peel off the skin, lay one half of the avocado, cut side down, and slice thinly. Then, fan out the slices so that they form a long line with the slices overlapping each other. Curl the avocado slices toward the centre to form a little 'rose'.
Place the avocado rose on top of the salad, scatter over the blueberries and serve immediately.