Refreshing nude art contributes to my amiable disposition (4,11)

I believe the answer is:

good naturedness

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'amiable disposition' is the definition.
'good-naturedness' can be an answer for 'disposition' (I have seen 'Helpful disposition' mean 'good-naturedness' so perhaps 'disposition' could also mean 'good-naturedness'). I am not certain of the 'amiable' bit.

'refreshing nude art contributes to my' is the wordplay.
'refreshing' is an anagram indicator.
'contributes to' is an insertion indicator.
'my' becomes 'goodness' (I've seen this before).
'nude'+'art'='nudeart'
'nudeart' anagrammed gives 'aturedn'.
'aturedn' put into 'goodness' is 'GOOD-NATUREDNESS'.

Can you help me to learn more?

I've seen this clue in The Times.

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