Keila....nothing's 'impossible'.....depending on the value attached to the project, even actual 'interpretive painting' is possible.....where manual pixel-pushing redraws the image....though it's a long, slow process. Anything done at the 'pixel level' usually is...
Normally it's enough to concentrate on the faces with such detailing effort, as the eye usually ignores 'scenery', only interested in 'focus' or subject-matter.
I haven't had a 'real' play with them yet....just messed with the standard filters which are next to useless....