Remove interior door panel

[accely]

It seems my rear passenger door window may have come loose a little bit. It drops down fast when rolling it down and it wont roll all the way up unless I push it up with my hands. The door panels look like they just snap in at the top, are they like that all around? What are the steps to removing the interior door panel?

thanks in advance.

Edit: found a thread with some info in it pertaining on this. I wonder if this would be better left to a shop :P