I have just been prompted to attribute this painting of mine (from an old blog post here) entitled "Flamenco" to John Singer Sargent. This I gladly do and apologise for not entitling it "After Sargent" in the first place.
I have been back to the original painting which is in the Isabella Stewart Gardner Museum, Boston
and in the course of googling it I came across the impressive and invaluable John Singer Sargent Virtual Gallery for which I am most grateful for Sargent's studies for the painting: