Digital portrait painting

Today i made a new portrait painting of a guy, there is very vague facial features in the drawing, as you can see the eyes are practically not there, its just a red line.
that's intentional, i wanted to how that would look like, an artist does some artwork and the viewers are supposed to fill in all the blanks, apparently thats how the most amazing artworks are made.
i learned that from watching marco bucci on youtube, that guy is just freaking amazing