Suggestions on how to form metal piece

[WCarp]

I would like to form a piece of metal 3/4" wide x approx. 2 1/4" long x 1/8" thick and was wondering what would be the easiest best way to do it. I attached a hand drawn full scale drawing (except for the metal's thickness) in which I try to show a piece of metal below a piece of plastic. The metal needs to be formed to conform to the plastic's shape. The metal could be aluminum or steel but I understand it shouldn't be too hard.

Does anyone have some suggestions?

Thanks