I know you posted this a while ago, but I just want to say, nice job! It is fun that you play with back up recordings. That is a great way to make an enjoyable music experience for yourself if you don’t have someone to play with. I really miss living with my brother and sister who used to accompany me on the piano anytime I asked. There are a lot of Play Along books in print now that can be used this way.
The only feedback I have here would be to try to use more of the mid to lower bow and get out of the tip. Your intonation sounds very nice and I enjoyed your vibrato too.