Call me clumsy... I’m nervous doing these things also.
The nuts that you have to remove and replace on the top are fairly thin. A wrench can easily slip off and bang into a nearby surface and chip the finish (ask me how I know this
Same thing goes for the tiny screws that go in the back. Be careful and take your time. I have actually taped everything off to avoid a scratch, but I recognize that’s a bit of overkill. When you tighten the new nut, no need to crank down on it. Overtightening can crack the finish.
Just go slow and don’t over do it. You’ll be fine.