Good Day Fellas,
I really can't say but I guess it's because I really do not like realism when it comes to art and I guess that's why I find it more interesting to draw or paint the human face with a lot of suggestions instead of painting the face or figure the way I see or perceive it in reality.
This is a sketch with a fine sense of depth and beautiful contrast. I would try more attempts to create more beautiful sketches like this.

