Perry follows weight of a rock-shaper (10)
I believe the answer is:
stonemason
'a rock-shaper' is the definition.
I can't judge whether this definition defines the answer.
'perry follows weight' is the wordplay.
'perry' becomes 'mason' (I am not sure about this - if you are sure you should believe this answer much more).
'follows' is a charade indicator (letters next to each other).
'weight' becomes 'stone' (stone is a unit of weight).
'mason' put after 'stone' is 'STONEMASON'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for stonemason that I've seen before include "Craftsperson" , "Chiseller" , "Rock craftsman" , "One working with, eg, granite" , "Artisan builder" .)