One of the most recurring theme in Draplin's video is his respect and adoration for the designers of the past. he collects books on logo designs from the past because he likes the design of the logos, and corporate identity from the 70s.
another thing to take note is to sketch. draplin is a big fan of using pencil and paper. he states that he prefers to start sketching on paper because your hand is 'free-er' than it would be in illustrator. it lets you quickly write down ideas while you sketch things out, plus take notes. he says you can be messy that way since some people feel like they have to be super clean with their initial designs, it can restrict their creativity.
according to draplin near the end he talks about having a dark base available just so that he can place the logo on said base and see how it does. everything looks perfect on a sterile, white background, but pait it with a color, and things could go haywire. logos could be seen everywhere, from T-shirts to billboards to Instagram avatars, some think about all of them and don't let the white space blind you.
create a symbol palette for everything. think about all of the logos you have designed, then imagine where those logos are going to go. create a stock template where you can drop in the logo.