It felt disjointed from actual gameplay, I thought it was a tutorial at first, but then nothing was happening. and it went on for a while and then suddenly i was at the actual level. I played it a few more times afterwards, and I think that the main issue is that it doesn't transition well into the level. after pressing all the buttons, suddenly the level is happening, and the character stops in place for a moment until you press the right arrow.
if you added a flashing sign to signal people to press the appropriate arrow key when the minigame finished so that the movement into the level was seamless, I think that would help a lot.
also the shift key looks way too similar to the up key imo.