We usually divide adjective into two parts; one is opinion adjectives and the latter is fact adjectives.
Adjectives like new, large, round, wooden are fact adjectives. They give us objective information about something (age, size etc.). Adjectives like nice, beautiful are opinion adjectives. Opinion adjectives usually go before fact adjectives. Let's see the following tables.
Sometimes we use two or more fact adjectives to modify one noun. Very often (but not always) we put fact adjectives in this order.
Adjectives of size and length (big / small / slim / tall / short / long etc.) usually go before adjectives of shape and width (round / fat / thin / wide etc.). Let's see the following example.
In this exercise you have to put the adjectives in the bracket into the correct position. Example : a beautiful chair ( wooden round )
You write : a beautiful round wooden chair