that pic seems to show the finger pads behind the lines..I was told they should be right on top of the line...
also..... is it possible to "tune & intonnate" a fretless so that it will be in tune IF your pads are behind the line , so visually it is like playing a fretted bass?
I think it depends on the physical nature of individual fingers. I intonate setup with a credit card, and if I stop a note on the side dot in the same way it is in tune, but my fingertips are very much over the dot. I use very little fingering pressure and don't have thick callouses as a result. I also use rather more pad than tip...