I know it’s quite far from the original. That petal shape shown in your image stretched my skills. But i gave it a go and completed that which I started. Which is important for me (if nobody esle)?
Ok. See how time go for me this weekend. If i can get some time I’ll do a very rough YouTube video on the process I used. It was a very basic approach that matches my skill level.
Trick is planning your model out in as little sketches as needed. To make sure the petals fit I would do my sketch like this first to make sure the assemble petals fit after printed if it is an assembly. Color printing with a single head printer gets better results as an assembly