I have a rattle in the rear door, coming from either of the 2 speaker.

One speaker also has a dent in it, though I'm not sure that this is what causes the problem.
(i will first try to get the dent out with some dentist tools)

I tried to find info on how to remove the door panel, but can't find anything .
can someone point me i the right direction AND advise me if it's difficult or not as i have 2 right hands (yes I'm a lefty )

oops, found some instructions now

Taking it off doesn't look too difficult, but what about putting it back ...?

I don't feel too comfortable doing this.
Can someone who has done it give me some feedback ...?

It's really easy to remove the door card and replace it back. It's the same on all Benz.. so just follow the C-Class video on Youtube and you will be okay.

Much appreciated!