Hams it up as English test is in Spanish (6)
I believe the answer is:
emotes
'hams it up' is the definition.
(to ham it up is to be overly dramatic or emotional)
'english test is in spanish' is the wordplay.
'english' becomes 'e' (abbreviation).
'test' becomes 'MOT' (as in an MOT test for a vehicle).
'is in spanish' becomes 'es' ('is' in Spanish).
'e'+'mot'+'es'='EMOTES'
'as' is the link.
(Other definitions for emotes that I've seen before include "Gushes" , "Gives show of feelings" , "Acts with show of feeling" , "Acts with show of feelings" .)