Slice your tomatoes into rounds approximately ⅓ inch thick - a serrated knife is the best for this. See Recipe Note.
4 tomatoes
Slice your mozzarella ball into rounds as well; these can be slightly thinner than your tomato rounds. Depending upon how large your mozzarella ball is, you may want to cut your rounds in half circles.
170 grams fresh mozzarella ball
Arrange the tomatoes and mozzarella on a plate or platter, overlapping the ingredients. Top with slivered basil and drizzle with olive oil and balsamic glaze. Season with salt (and pepper) to taste.
1 tbsp fresh basil, slivered, 2 tbsp olive oil, 1 tbsp balsamic glaze, salt and pepper to taste
Notes
Slice your tomatoes width-wise, meaning turn your tomatoes onto their side so that the stem is facing right or left, and cut down. Your slices can be as thick or thin as you like - I try to keep them at about 1/3 inch.