As Lark Rise showing ends, reveal basic framework (8)
I believe the answer is:
skeleton
'basic framework' is the definition.
(I've seen this before)
'as lark rise showing ends reveal' is the wordplay.
I cannot really understand how this works, but
'reveal' could be 'leton' ('let on' can be a synonym of 'reveal') and 'leton' is located in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for skeleton that I've seen before include "Basic scheme" , "Hidden scandal (in a cupboard?)" , "Not sleek (anag.)" , "- key; - staff" , "Bone formation in the family cupboard" .)