Well, I’ve never had a violin teacher, so I have picked up bad habits that are not easy to brake. Some of them include straight bowing, position shifting, and playing REALLY fast parts, which includes sight-reading.
I live in a small town that has a community orchestra, but I prefer to play in a couple of symphonies that are a total of 4 hours round trip to get there. I also take lessons a couple hours away. That’s why I appreciate Violin Tutor Pro. For people that live in the hinterlands because of a job, on-line lessons are a blessing.