im working in solidworks for my senior project in college and could use some help. Im trying to make this more concave.

I have also attached the file.This is the face of a Rim, a 3Pc rim. I know that there are know dimensions. I have left them blank because this will needs to be differet sizes for different cars. For my car it will be a 18" face. But since this design was made in a older version of solidworks it has no dimensions.

Im not fluent in solidworks im more of a desinger that ended up using solidworks for his project. help would be apperciated.
anyways, if anyone would have any knowledge as to make this template concave i would really apperciate it .

To give you an idea of the designs im doing.

Stuff such as this, im just looking to make them concave.

By concave i just mean basically pulling the center down so the face is stretched in almost like a slight funnel look.

heres a photo for an example

Is anyone able to help? Thanks!