All that remains of a rough draft, in a writing sense (8)
I believe the answer is:
skeleton
'draft in a writing sense' is the definition.
'skeleton' can be an answer for 'draft' (thesaurus). I'm not certain of the 'in a writing sense' bit.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for skeleton that I've seen before include "Bones of a body" , "Framework of bones" , "structure as basis" , "emaciated type" , "person in no danger of looking fat!" .)