Could my kitten be a Maine Coon?

Cosmo is definitely a Maine coon cat because his fur is long like a Maine coon cat's fur and his fur is the color of a Maine coon cats fur and the easiest way of telling if a cat is a Maine coon cat is by looking at its forehead see the big "M" that means that cat is a Maine coon cat. Hope this help you know if Cosmo is a Maine coon cat!