I recently put together this tutorial for the Cat Apple boss from the game Turnip Boy Commits Tax Evasion:
I used to look at good speedrun tutorials and think they were incredible, but the idea of doing all that work felt overwhelming. But as it turns out, when you practice a skill, you get better at that skill! After doing tiny video projects for a while, this is getting noticeably easier. It's not like I did anything to crazy with this video, but even so, once I had all the footage together, the actual process of making the commentary and doing the editing took less than 3 hours.
Developing any skill takes work, but if it's something you really want to do, then that is work worth doing!