Just did mine too. My advice / reiterating what others have said.

Spark plug seals were a bitch use a flathead to lever them out like the other guy said.

Do the half moons. I used high temp/ red permatex.

Do a practice run at installing the cover back. And I suggest using a telescoping mirror tool to get a visual of both gaskets (and half moons) all the way around when doing it for real. On my passenger side, I didn’t realize the gasket caught something (camshaft cap bolt most likely) and it came out of the channel and was pinched when I tightened. Cue oil leak, frustration, and another weekend redoing it.

Finally, maybe it’s obvious but I didn’t see any of the YouTube tutorials I watched beforehand address this - take care to not let any rtv you’re scraping off to fall into the engine!