Cut the bread into thin slices, the thinner the better.
Cut the bread into small cubes.
Cut the cheese into thin slices.
Cut the cheese into small cubes.
Form a canape in layers: a layer of bread, then cover with a thin layer of cream cheese, caviar, cheese, bread, cream cheese, caviar, cheese. Tie a bow on each canape, attach an onion bow to the skewer on top.