Congratulations. Not bad at all for being the result of an hour-long practice before capturing the images you did, which I quite enjoyed. Your focus, framing, and subject matter kept my eyes trained upon your video short. I liked your music selection, too. Good production values as well.
I'm no expert here, but let me toss this out to you: You may have already considered this - as I am now - but you may want to look into getting a good ND filter set for your Mavic's camera. They will take your filming/photography to the next level as they allow you greater control over key camera settings and will result in the smoothest, cinema quality video and images you could hope for. I haven't been able to locate a decent set of the ND filters for my Mavic due to high demand for them, but I see a HUGE difference between my Mavic's images and images taken with my other drone which I do have ND filters for. Night and day difference.
Keep doing what you're doing, because it looks good to me. Happy flying and filming!