Older piece by an artist good, considering (7)

I believe the answer is:

deeming

I'm a little stuck... Click here to teach me more about this clue!

'considering' is the definition.
(deeming is a kind of considering)

'older piece by an artist good' is the wordplay.
'older piece' becomes 'de' (I can't explain this - if you can you should give a lot more credence to this answer).
'by' says to put letters next to each other.
'an artist' becomes 'emin' (Tracey Emin).
'good' becomes 'g' (abbreviation).
'de'+'emin'+'g'='DEEMING'

Can you help me to learn more?

(Another definition for deeming that I've seen is " 'Judging, considering (7)'".)

I've seen this clue in The Daily Express.

Want a hint initially instead of a full solution? Install my app