Museum to fashion youngster - Scots boy - with instant education I promoted (11,11)

'museum' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's a link between them I don't understand?

'fashion youngster scots boy with instant education i promoted' is the wordplay.
I cannot really see how this works, but
'boy' could be 'smith' and 'smith' is found within the answer.
'instant' could be 'inst' (synonyms) and 'inst' is found in the answer.
'i' could be 'a' and 'a' is located in the answer.
This explanation may well be incorrect...

'to' acts as a link.

Can you help me to learn more?