In my spare time I am (finally) making efforts to lay down musical tracks that were playing in my head for a long time. Part of the learning process is watching documentaries of musicians going over and over and over again until that mix is just perfectly right. (This skeleton in the studio image says it all). And these are the 1980s and 1990s, for many of today's electronics musicians, it is all about polishing and mixing so it seems.
There is a parallel here in presentation design. Instead of editing the footnotes the night before the presentation, get a good night of sleep or do one more live rehearsal of your story. Time better spent.