Here's why:
* "a" is the indefinite article, used to introduce a singular noun.
* "small" is an adjective describing the size of the bowl.
* "Japanese" is an adjective describing the origin or style of the bowl.
* "serving" is a noun that modifies "bowl" and indicates its purpose.
* "bowl" is the noun being described.
Therefore, the correct order is to place the article first, followed by the adjectives, then the modifying noun, and finally the main noun.