An impressive way to hold up present that’s most generous (10)
I believe the answer is:
handsomest
'hold up present that's most generous' is the definition.
I can't judge whether this defines the answer.
'an impressive way' is the wordplay.
'an impressive' becomes 'handsome' (I can't justify this - if you can you should give a lot more credence to this answer).
'way' becomes 'st' (abbreviation for street).
'handsome'+'st'='HANDSOMEST'
'to' is the link.
Can you help me to learn more?
(Another definition for handsomest that I've seen is " Most striking".)