Take flour and knead it first

Divide the dough and shape it according to crocodile

Now with the help of scissors start giving small cuts on whole body of dough

Bake the whole on some big tray or on some vessel's lid at 220°c

When crisp and hard take it out and with the help of brush start spreading blackjack on it to give colour

Note- for the mouth part of crocodile divide the mouth side dough from centre in slant cuts and place some ball or an apple to keep the mouth open