how to make a bocadillo spain

How to make tuna bocadillos with olives and cheese ? 2 cans of tuna, drained from oil.1 cup (200 g) boiled white rice.A large potato, cut into small cubes and boiled.3 large potatoes, peeled and cut into fingers and fried.⅛ kilo (125 g) beef mortadella, cut into thin strips.3 boiled eggs cut into rings.½ cup …