Sooo firstly some hate:
Also why are you asking ukrainian/russian hacker about advices?
The only thing that he can write here is "hack this game" because his content depends on hacked account and breaking the game rules.
And now my advices:
There should be some quality requirements I think. But if there is no quality requirements you still should go for it! My minimum is 720p30 (1280 x 720 with 30 frames per second) preferably 1080p60. And in my opinion every video should be edited. Get some free programs (I'm using VSDC video editor) and try your skills. Simplest things you can do are:
-Speeding up boring parts of the video
-Adding music etc.
And now some advices about Youtube - (SuperMechs Team YOU SHOULD READ THIS):
Add tags, simple titles, some kind of miniatures and descriptions! If you use no-copyright music remember that most of them require adding links to the description! And finally to build a channel upload regularly. Don't be Super Mechs : Mech Battle Arena - don't waste your chance!
I hope that it will be a nice competition. Don't destroy my hope by rewarding low quality videos or hackers, please.