You can decorate the omellete with small slices of tomato or similarly, something not too fancy. It is usually served in shaped cake.
First beat the egg whites separately and then add the yolks. You will get a more spongy omelette.
The mount of breadcrumbs can be modified by the diners. Adding more breadcrumbs in the mixture of beaten eggs you will get a thicker omelette. Just opposite, with less breadcrumbs, you will get a lighter omelette.