A very thorough video with closeups on filing nails. I suppose it's nothing new, but she uses a more extreme left-to-right sloping ramp or rounded ramp on her nails that's not as common in other lessons on nail filing that I've seen. I've seen a photo of David Russell's nails that looked similar. I think it's good to see the variations in the way people file their nails since it validates the fact that many shapes work, it's quite individual. It's a pay website ($12 per month) but well worth it imo.
https://tonebase.co/lessons/player/baha ... que-lesson
An eyewitness will often only see what he already believes to be true.