Toast the slices of bread.
While the bread is toasting, prepare the face components.
Cut the avocados in half and then thinly slice.
Set 8 olives aside, slice 4 olives cross-wise into circles for eyes, and slice the rest of the olives into thin strips for mouths and eyebrows.
Cut small circles out of the cheese slices so they are slightly bigger than the round olive slices. (The cheese circles will be the backs of the eyes.)
When the toast is done, trim each piece of toast into a rectangle and the spread the avocado slices out onto the toasts, one half per slice of toast. Decorate the faces using the cheese and olives, and the corn chips for hair.
Use the toothpicks to hold the full olives into the sides of the bread.