You're very welcome!
Ah yeah I see what I did wrong now, I went too far off the drawbridge in the first level and probably missed some kind of hitbox, so I just died and startet over the first level.
Once I just let myself roll off without holding down forward, i was able to progress!
Also I get why it wasn't clearer, there's not much time in the jam and at first it's mostly about getting everything functional, so it can be hard to see it from the perspective of the player who's going in blind and doesn't know how it works yet.
On the other hand, collecting the power-ups and what they do was very intuitive though, like an interactive tutorial!