Watched Dune: Part Two already? No? Go watch it and come back here.
Haven't seen the first Dune? Find it. Watch it. Trust me, it doesn't really matter you are not a fan sci-fi. I am not as well.
Once you're ready, look at this video which will bring you behind the scenes of just one short moment from the movie. Pay special attention to minute 6:56. See to what level of detail they perfected everything.
No detail is too small.
That's applicable for your presentations as well. A word here, a comma there, a pause not done in the right moment and who knows what you are missing? The questions is - is no detail too small for you as well and do you approach your important talks with this mindset?