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Can anyone help me make this Concave?/

im working in solidworks for my senior project in college and could use some help. Im trying to make this more concave.
Screen Shot 2014-01-18 at 6.00.36 PM.jpgScreen Shot 2014-01-18 at 6.00.50 PM.jpg

I wish i could attach the file . . This is the face of a Rim, a 3Pc rim.
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. Screen Shot 2014-01-19 at 3.30.09 PM.jpg

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!