Excellent recommendation for better cover (3-3)
I believe the answer is:
'excellent' is the definition.
(I've seen this before)
'recommendation for better cover' is the wordplay.
'recommendation' becomes 'tip' (I've seen this in another clue).
'for' is a charade indicator (letters next to each other).
'better cover' becomes 'top' (synonyms. I am not sure about the 'better' bit.).
Can you help me to learn more?
(Another definition for tip-top that I've seen is " First-class".)