But not too self-important possibly to mop spilt soup? (7)

I believe the answer is:

pompous

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'but not too self-important' is the definition.
'pompous' can be an answer for 'self-important' (I've seen this before). I am not sure about the 'but not too' bit.

'possibly to mop spilt soup?' is the wordplay.
'possibly' indicates anagramming the letters.
'spilt' is an anagram indicator.
'mop' with letters rearranged gives 'pom'.
'soup' with letters rearranged gives 'pous'.
'pom'+'pous'='POMPOUS'

Can you help me to learn more?

(Other definitions for pompous that I've seen before include "Bombastic" , "Grandly self-important" , "Proud" , "Grandiose" , "Arrogant" .)

I've seen this clue in the Evening Standard.

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