border with bay

[Cla70]

Good morning to all,
I attach quoted design image for the realization of a cone made of calandra and bordatrice with a hole and a edge; the problem is that I can't get real development, I also attach the image of development I can get.
Has anyone already had experiences resolved on this?

thanks to those who will answer and apologize if I wrote inaccuracies but, I've never had anything to do with sheet metal.

 

[eugenesis]

The development of the displacement at the foot of the door leaves a lot to be desired.
when in reality it is not so

 

[Cla70]

The development of the displacement at the foot of the door leaves a lot to be desired.
when in reality it is not so

but something escapes me in your answer because if I remove the edging, the development gives me and not like a painting.

 

[Quoque69]

inventor does not manage double curvature needs a specific program