How to make an indent on a face nicely?

[Dnt]

hello
I want to make a face like the one circled in picture.(indent on body of car)
what is your suggestion( any plugin or method)

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[pilou]

Maybe you find some trick here

Tut is here

Modeling Sketchup by ixlrlxi

[Dnt]

Thank you dear Pilou
you are always a help for me.
I was wondering if there is any plugin for this?
I cant go back and model again... i thought about bending and then another option occurred to em making a lot of segments on face and doing it piece by piece which need time... what is you idea(about indent in pic)?
ps: how great was ixlrlxi