I feel this gets too much off of Celeste and I also don't like how the death sound was ripped out of Geometry Dash. I'd say, make the background move(like make the clouds move, and maybe the background behind that too, but use parallax if you do). You should make the stars sway and most importantly, ADD PARTICLES. Adding particles would do so much for this game, granted you do the rest. I'd also add more tiles and a transition animation from level to level.