One's id: that's a particular image (6)

I believe the answer is:

selfie

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'a particular image' is the definition.
'selfie' can be an answer for 'image'. I'm not sure about the 'a particular' bit.

'one's id that's' is the wordplay.
'one's id' becomes 'self' (I am not sure about this - if you are sure you should believe this answer much more).
'that's' becomes 'ie' (abbreviation for 'id est', 'that is' in Latin).
'self'+'ie'='SELFIE'

Can you help me to learn more?

(Other definitions for selfie that I've seen before include "21 [PHOTO]" , "Personal photo" .)

I've seen this clue in The Independent.

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