Adjectives with And

When 2 or 3 adjectives come together, we sometimes put 'And' with them and sometimes not. It depends partly on their position in the sentence. 

When the adjectives come in 'predicative' position (after 'Be, Seem, and similar verbs'), we usually put 'And' before the last one. 

He was tall, dark and handsome. 

 You're like a winter's day: Short, dark and dirty. 

In a very literary style, 'And' is sometimes left out. 

My soul is exotic, mysterious, incomprehensible. 

        When the adjectives come in 'attributive' position (before a noun), 'And' is not so often used. 

                    A tall, dark, handsome cowboy 

                    A small, shiny, black leather handbag 

            However, 'And' is possible when the adjectives say the same kind of thing (e.g. when 2 adjectives both describe character, color or material): 

                    A cruel (and) vicious tyrant         A yellow and black sports car 

                    A tall (and) elegant lady             A concrete and glass factory