I didn't know that was there either, so thanks for that mitch.
I have been painting from photos by Bernard Dupont (wildlife photographer - with permission) https://www.flickr.com/photos/berniedup/
and the most pleasing version of his leopard in a tree photo is, I think, this one using a modified Elko AOP. I had to reduce the image size to 1000 pixels high to get under the 1 Mb limit... I have written a blog entry about how I paint including use of DAP and other software) and the difficulties of choosing which of the paintings is 'best' which can be found at https://drrickblog.wordpress.com/2017/04/19/so-much-choice-thank-you-bernard-dupont/
along with some other earlier posts about some of my 'real' painting style before the motor neurone disease took hold...