For best results, use room-temperature tomatoes and mozzarella so the flavors are more pronounced, and choose firm, sweet cherry tomatoes and fresh, bright green basil leaves without dark spots. If preparing ahead, assemble the sticks and refrigerate them without oil or glaze, then add the seasonings right before serving to prevent the basil from wilting and the mozzarella from drying out. You can vary the presentation by using multicolored cherry tomatoes or flavored olive oil, and if using longer skewers, repeat the tomato-basil-mozzarella pattern for a heartier appetizer.