Emphasise these changes in engineer's drawing (6,5)

I believe the answer is:

stress sheet

'engineer's drawing' is the definition.
(type of engineering diagram)

'emphasise these changes in' is the wordplay.
'emphasise' becomes 'stress' ('stress' can be a synonym of 'emphasize'**).
'changes' is an anagram indicator.
'in' is an insertion indicator.
'these' anagrammed gives 'sheet'.
'stress' placed into 'sheet' is 'STRESS SHEET'.

I've seen this clue in The Independent.

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