You can't really punch-out the guide holes for the screws.
I simply used a drill bit to open up the holes. The drill was long enough to do it without having to take apart the cup holder, even if this is possible.
You have to drill at an angle to open up some of the holes, but it was a very simple procedure.
Further, when mounting on your door, use a level to mount it. Mark with a pencil the four hole areas. I tried eyeballing it, but your eye plays tricks on you when you have your door open. There is no frame of reference because your car sits at a slight angle in your driveway or on the street. Your door slants at a slight angle, etc. when open.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".