Relax, and see uplifting fashion change (7)
I believe the answer is:
restyle
'fashion change' is the definition.
The definition suggests a verb in its base form which matches the answer.
'relax and see uplifting' is the wordplay.
'relax' becomes 'rest' (to relax is to have a rest).
'and' is a charade indicator (letters next to each other).
'see' becomes 'ely' (see is a place with a cathedral - e.g. Ely).
'uplifting' is a reversal indicator.
'ely' reversed gives 'yle'.
'rest'+'yle'='RESTYLE'
Can you help me to learn more?
(Other definitions for restyle that I've seen before include "make a change" , "Model afresh" , "Design afresh" , "Create a new image" , "Give a makeover to" .)