Praising butterfly hiding tail on the blue side (12)

'praising' is the definition.
Both the definition and answer are adjectives.
Maybe there's an association between them I don't understand?

'butterfly hiding tail on the blue side' is the wordplay.
'butterfly' becomes 'comma' (comma butterfly is a kind of butterfly).
'hiding' is an insertion indicator.
'tail' becomes 'end' (the tail of something can mean the end).
'on the blue side' becomes 'tory' (I am not sure about this - if you are sure you should believe this answer much more).
'comma' enclosing 'end' is 'commenda'.
'commenda'+'tory'='COMMENDATORY'

Can you help me to learn more?