Trim edges of bubble pack (6)
I believe the answer is:
bedeck
'trim' is the definition.
(I've seen this before)
'edges of bubble pack' is the wordplay.
'edges of' means to remove the middle letters.
'pack' becomes 'deck' (deck is a kind of pack).
'bubble' with its middle taken out is 'be'.
'be'+'deck'='BEDECK'
(Other definitions for bedeck that I've seen before include "Adorn, cover with decorations" , "Festoon; decorate" , "Lavishly decorate" , "Embellish with adornments" , "Adorn, embellish" .)