Very nice video! Timing of day and compositions are wonderful. One thing you might have fun with is using a set of neutral density filters that will let you control the amount of light entering the lens which then lets you manually set your camera shutter speed to be 2x the FPS speed which helps to smooth out perceived motion, reducing the jerkiness that sometimes happens with cameras like these and certain shots. This site
HERE provides a nice discussion on this topic of ND Filters on DJI Spark. It really does help and is a fun, useful accessory for your Spark. Care is needed in selecting quality filters that don't cause gimbal issues. I have had great luck with the ProPolar brand, more expensive but worth it IMHO