Great game and magnificently polished! I think I missed one of the flowers, but I was able to get most of them.
I had trouble coordinating the buttons to combine gliding and dashing in the same maneuver, but it may simply be my struggle with Celeste-like games.
I think the springboards could stand out more from the terrain; I didn’t notice them initially until I collided with them.
If I timed my jumps well enough, I could wall jump up a one-sided wall. I wasn’t sure if this was an exploit or not, but it let me cheese my way through obstacles in unintended ways, haha.
Overall, nice game! It would be fun to see how it grows :)