Good work! The DDR vibe really pops here. I'm seeing a lot of new techniques at play and it's great to see you experiment with new genres.
From the group, the feedback was to adjust the control scheme and to sync the music to the beats. For control mapping Valorie noted that there was an alternative control scheme where ZXNM were used for the arrows. That allowed each finger to line up with the arrows and you can use both hands to play.
It's great you spent time practicing making your own art. I can see a unique start to emerge in your work... continue to practice it and see where it goes!