Quick questions before I tackle changing oil in the MB for the first time...

[190D22]

This will be the second oil change for the car since I've owned it. MB did the first for me because I had her in for lots of work. I bought the oil filter and 10W40. The filter came w/ the big rubber o-ring, and two aluminum washers. From what I am reading in my haynes manual the washers are for the oil return thing in the filter housing and the other is for the oil drain plug.

Is this all correct? And tips or warnings before I do this? Thanks in advance.