"an example (how) to do something" or "an example about doing something"?

I will give you an example to write a CV.

or

I will give you an example how to write a CV.

or

I will give you an example about how to write a CV.

or

I will give you an example about writing a CV.

Which one of the above is right? If none, please, give me the correct one.


'I will give you an example of how to write a CV'.