Here is a tutorial on how to practice Ševčík Op.3 Variation 2. I've wanted to make these kinds of videos for a while, but it's a bit of a daunting task for me. I will continue to make these, but I'll be skipping around the variations rather than going in order.
Here is the chart of bow strokes I refer to in the video:
I hope this is useful to others. Enjoy!