The artist, under his armpit, was carrying the Whistler's copy of which...

[Volcano1985]

The artist, under his armpit, was carrying the Whistler's copy of which he had made a loose roll

Is it correct?

[Yankee]

Hi Volcano

That sentence is a bit awkward, and also sounds as though the artist is under another person's armpit.

Here is a possible alternative:

- The artist was carrying the loosely rolled Whistler copy under his armpit.
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_________________
"Nearly all men can stand adversity, but if you want to test a man's character, give him power." ~ Abraham Lincoln

[Cooliegirly]

The artist, under whose armpit, was carrying the Whistler's copy, of which he had made a loose roll?

[Yankee]

Hi Cooliegirly

Although the use of "whose" in that location in the sentence makes it clear whose armpit is being referred to, it actually makes the sentence worse grammatically. The entire sentence needs rewording -- it's not simply a matter of changing one word.
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_________________
"Nearly all men can stand adversity, but if you want to test a man's character, give him power." ~ Abraham Lincoln

[Volcano1985]

Thank you two

The artist was carrying the loosely rolled Whistler copy under his armpit.I think this is better, it is what i tried to say