First, I think you sound great. If I were to notice one technique thing, it is that perhaps you are using a little too much upper arm and a bit too little forearm. It's really not that noticeable, because you're short bowing most of the time, but there's a good chance that if you film yourself doing frog to tip bowing, it will become more evident.
Whether that's a significant issue for that genre of music is beyond my beginner's knowledge.
A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort. ~Herm Albright
I agree with Uzi. You lock everything below your elbow and play from your shoulder. It is going to feel hard/weird at first but trying playing with just your fingers/wrist. Go to a wall and put your arm between your side and wall so you can't move your arm. With a little practice you will be able to play with your wrist instead of your arm and you'll be that much better!
Glad to see you play with your arm down by your side! I physically cringe when I see people with their elbow straight out. I love hearing you play songs that I play, but a bit differently. I want to post mine so we can compare styles to the same song. We can have a Swallowtail Hoedown!