Too vain perhaps - because of this? (7)
I believe the answer is:
ovation
'this?' is the definition.
The definition suggests a singular noun which matches the answer.
'too vain perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'too'+'vain'='toovain'
'toovain' with letters rearranged gives 'OVATION'.
'because of' acts as a link.
Can you help me to learn more?
(Other definitions for ovation that I've seen before include "Period of sustained applause" , "Enthusiastic applause, may be given standing" , "Round of applause, may be standing" , "Great reception" , "Stormy applause" .)