I have a few years experience in the video production industry (like 35).
I'll give you a few suggestions, but keep in mind, this is your project not mine, so you do wht you feel is best for you.
Short, everyone likes short instructional videos, BUT, they do not give you much recognition, in otherwords, there are dozens of people mking short instructionl videos of high quality and very knowledgable. and I couldn't tell you one of their names.. However, nd if you do not know of him already you should google him, Terryl Dactyl, has made a huge impac not only on Youtube, but also on the small engine repair industry with his videos. He introduces personality as well as ridiculous funny drama into every video he does. (lookup "Blademan")..
Then there is Chris Fix. WHo never shows his face and only the back of his hands but has one of the largest followings and probably second best to Teryrl when it comes to knowledge of fixing.
both of those guys whom I have featured on my streaming services in the past make long entertaining videos that keeps viewers engaged and coming back for more.
Basically, do YOU, be humorous if you feel humorous, be long winded if your passionate about a topic and wear emotion on your sleeve..
Also develop a catch phrase. always end the instructional part f your video with the catch phrase.
Short, bland, here's the problem and here are the steps to fix something are great for a classroom full of lemmings, but in the rel world people want information and entertainment as well as good camera angles nd good sound..
Be yourself, most of all and have fun doing it...
"and There's your dinner"..
This is my humble but well experienced opinion in the video industry, use as you like..
'Mitch
www.TVByDemand.com