Nice job! The vibe of the song kinda reminds me of Lindsey Stirling and Bond. Your technique looked good to me, and for the most part, intonation and timing was spot-on.
I think that if you play the backing track a bit louder and mic up your violin (maybe not even into a sound system, but directly into your computer), it’ll improve the sound quality of your future videos and it’ll help when you’re playing. I know recording yourself at home can be tricky sometimes, but it’s worth looking into some software (Audacity is free) and a microphone.
I used to use the built-in webcam software on my computer all the time. It does the job, but you’d be surprised how much of a difference it makes when you use different equipment.
All in all, keep up the good work! It sounded great! 🙂