Geometry nodes flower animation

I’m trying to get that result, specifically the green thingy with geo nodes:


I’ve made a spline for it to follow:

It’s a Bézier curve with two segments, and a visualisation of the control points.
I just can’t get that peel effect. I’ve tried making two splines, one for the closed position and one for the open, turning it to mesh and taking for each point the calculated average of the two splines, basically giving the point at the n% way on the curve the calculated average of the position of the n% point on each spline, and used polar coordinates to get a round transformation:

but it doesn’t look right. I’ve tried animating each control point on a curve of its own, but I am no animator and that was a disaster. any advice or idea would be highly appreciated, thanks!

Please refer to the video.

Thanks, but I already saw that video and it doesn’t have that peel effect at the pointy edge of the green petal

never mind, got it: