Small, you grant, and pasty-faced (6)
I believe the answer is:
sallow
'pasty-faced' is the definition.
(I've seen this in another clue)
'small you grant' is the wordplay.
'small you' becomes 's' (I can't justify this - if you can you should give a lot more credence to this answer).
'grant' becomes 'allow' (synonyms).
's'+'allow'='SALLOW'
'and' is the link.
Can you help me to learn more?
(Other definitions for sallow that I've seen before include "Sickly yellowish colour" , "Of complexion, pasty or yellowish" , "Sickly complexion" , "Pale or yellowish colour" , "(Of complexion) rather yellowish" .)