You are riding well. Keep riding and trying to improve.
The first thing I would fix is your stance. You bend at the waist, you will notice you look hunched in the upper body. To carve effectively you need to be perfectly aligned over your snowboard. This will give you better control and balance. It will also allow for stronger and more controlled edging and pressure control. It's always a good idea to focus on the most obvious and important technique flaws before even looking at anything else. For you, this is STANCE
. You might find a small change to your stance will make a big difference.
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If you have any questions or would like me to look at other videos please let me know.